Ethereum’s rollup strategy has made data availability dramatically cheaper, but its next challenge is economic rather than technical: proving that growing blob demand can generate durable value for the network without undermining the affordability that brought users to Layer 2.

From scarce block space to a data availability market

Ethereum’s scaling strategy has changed the role of the base chain. Instead of processing every transaction directly, Ethereum increasingly acts as a settlement and data availability layer for rollups. Networks such as Arbitrum, Optimism, Base, zkSync and Scroll execute transactions away from Ethereum, then publish compressed transaction data and proofs back to the main chain.

Ethereum’s blob target and maximum capacity beforeand after the second Blob Parameter Only forkblobs per block01020Previous target10New target14Previous maximum15New maximum21Chart: theUnhashed · Data: decrypt.co
Ethereum’s blob target and maximum capacity before and after the second Blob Parameter Only fork · Chart: theUnhashed · Data: decrypt.co

That model became substantially more efficient after the Dencun upgrade in March 2024. Its most important component for rollups was EIP-4844, which introduced temporary data containers known as blobs. Rollups could use blobs to publish transaction data at a lower cost than ordinary Ethereum calldata, while nodes were not required to store that data permanently in the same way as regular blockchain history.

The result was immediate. Fees on many Layer 2 networks fell sharply, often making small transactions affordable for the first time. For developers, cheaper data publication improved the economics of payments, gaming, decentralized finance and consumer applications. For users, it made the promise of scaling more tangible.

But the same change introduced a difficult question. If Ethereum gives rollups abundant data capacity at very low prices, where does the economic return for Ethereum come from?

That question was easy to postpone while blobs were a new product and demand was still forming. It is becoming harder to avoid now. The network has moved from launching a capacity market to managing one. The test is whether blob demand can remain strong enough to support fee revenue as additional Layer 2 networks compete for the same space and as Ethereum expands supply.

How blob fees differ from ordinary Ethereum fees

Blob fees are not simply a cheaper version of normal transaction fees. They create a separate fee market with its own pricing mechanism.

Each Ethereum block has a target number of blobs and a maximum number that can be included. The target is designed to leave room for demand to rise without immediately forcing congestion. When usage exceeds the target over time, the blob base fee increases. When usage falls, the fee declines toward a protocol-defined minimum.

This design resembles Ethereum’s existing execution fee market, but the economic treatment is different. Blob base fees are burned. A rollup pays for the data it publishes, and the base portion of that payment is removed from circulation. That creates potential value for ETH holders through reduced net supply growth. However, the proposer does not receive the blob base fee as direct revenue. Validators can earn execution tips and issuance, but the central blob fee is destroyed rather than paid to the block producer.

That distinction matters. A high blob fee can improve ETH’s burn rate while doing little to increase the immediate cash flow of the validator set. Conversely, very low blob fees are good for rollup operators and users but create limited burn pressure.

Ethereum therefore has two related but different objectives. It needs affordable data availability to make rollups competitive, and it needs enough demand for that data to produce meaningful economic value. Those objectives can align during periods of strong usage, but they can also conflict.

The network’s economic redesign depends on finding a durable middle ground.

Early demand showed both promise and weakness

The first phase of the blob market revealed that Ethereum had successfully created spare capacity. Rollups were able to migrate much of their data from calldata to blobs, and the cost savings were substantial. Yet blob demand often remained below the level required to create sustained congestion.

That outcome was not necessarily a failure. EIP-4844 was designed as an initial scaling step, not as the final form of Ethereum’s data availability system. Launching with excess capacity allowed developers to test the infrastructure and gave rollups room to grow.

The problem is that a market with persistent excess supply produces weak pricing power. If blobs are available almost all the time at or near the minimum fee, Ethereum is functioning more like a subsidized utility than a scarce settlement network.

Public dashboards from Ethereum analytics providers and Layer 2 monitoring platforms have shown the central tension. Blob usage can spike when activity rises on several large rollups, particularly during trading surges, token launches or new application campaigns. But these bursts do not always become a stable baseline. A network can experience occasional full blocks while still generating modest average revenue over weeks or months.

This difference between peak usage and durable demand is central to the revenue question. A short period of congestion proves that the market can price blobs. It does not prove that Ethereum has created a reliable long term fee stream.

Rollup competition is changing the customer base

Ethereum’s blob market is also a wholesale market. Its direct customers are not usually individual users. They are rollup operators, sequencing companies and infrastructure providers that purchase data publication capacity on behalf of their users.

That creates a competitive environment among Layer 2 networks. Rollups are competing for users, developers, liquidity and applications, while also deciding how much of their activity to settle on Ethereum. Some are built around optimistic fraud proofs, others around zero knowledge proofs. Some operate as general purpose chains, while others focus on payments, gaming, trading or specific application ecosystems.

Their settlement choices affect Ethereum’s revenue in several ways.

A rollup may publish data frequently in small batches, improving confirmation speed but using more blobs. Another may wait longer and compress more aggressively, reducing its data costs. A rollup may also use alternative data availability arrangements for some transactions, especially when it is willing to trade Ethereum’s settlement guarantees for lower costs or higher throughput.

The emergence of validiums, volitions and chains using external data availability committees makes this choice more explicit. These systems can offer cheaper or more flexible scaling, but they do not provide the same data availability assurances as a rollup that publishes all required data to Ethereum.

Ethereum’s advantage is therefore not simply low price. It is the combination of economic security, broad validator participation, neutral settlement and a large developer ecosystem. If the price of Ethereum data rises too quickly, rollups have alternatives. If the price stays too low, Ethereum may fail to capture enough value from the services it provides.

The economics of cheap scaling

Cheap blobs have already created meaningful benefits beyond lower transaction fees.

They reduce the cost of building applications that need frequent settlement. A payments company can use a rollup without making each transaction prohibitively expensive. A game can record more user actions on chain. A decentralized exchange can batch trades while preserving a stronger connection to Ethereum’s security model. New consumer applications can experiment with onchain interactions without assuming that every user will pay a high fee.

Lower costs can also improve the business model for Layer 2 operators. A rollup can retain more revenue from its own transaction fees after paying Ethereum for data publication. That revenue can fund development, sequencer infrastructure, liquidity incentives and ecosystem grants.

This is one reason some Layer 2 networks have been able to subsidize activity while building their user bases. The rollup is not merely a technical scaling tool. It is also a business that buys settlement services from Ethereum and sells transaction execution to users and applications.

Yet lower costs can produce an uncomfortable distribution of value. Users benefit first. Rollup operators may benefit next if they maintain a spread between their transaction fees and Ethereum’s blob costs. Ethereum’s validators and ETH holders benefit only if demand becomes large enough to create meaningful burn or if increased usage eventually supports stronger pricing.

The question is not whether blobs are useful. They clearly are. The question is whether Ethereum has priced its most important service in a way that allows the base layer to remain financially durable.

What validators actually need

The security budget debate is often reduced to ETH issuance and burn. The reality is more complicated.

Validators currently receive a combination of newly issued ETH, execution layer priority fees, maximum extractable value payments and other rewards. Blob base fees add to ETH’s burn, but they do not directly become validator income. If Ethereum’s execution activity moves to rollups and blob fees remain low, the base chain may see less direct fee revenue even as it supports far more economic activity.

That creates a possible gap between network usage and validator compensation. Ethereum could become the settlement layer for millions of users while the fees associated with that activity remain too small to offset issuance.

ETH burning still matters. A sustained burn rate can reduce net supply growth, and scarcity may support the asset’s long term monetary properties. But burn is not the same as operating revenue. Validators need predictable rewards to maintain hardware, participate in consensus and absorb the risks associated with running infrastructure.

A healthy system needs both. It needs a monetary asset that is not excessively diluted, and it needs enough validator income to preserve robust participation.

There is also a timing issue. Security costs are paid continuously, while blob revenue can be highly cyclical. A market that generates substantial fees only during speculative bursts may not provide the same confidence as one with a broad base of recurring demand from payments, exchanges, games and enterprise applications.

More capacity could delay the revenue test

Ethereum’s roadmap is designed to increase data availability capacity further. The Pectra upgrade raised the target and maximum number of blobs per block, giving rollups more room before congestion returns. Future work on peer-to-peer data distribution, including PeerDAS and related upgrades, aims to let the network handle more blob data without imposing unreasonable bandwidth and storage demands on validators.

Technically, these upgrades are essential. Ethereum cannot support a large rollup ecosystem if every new application competes for a tiny amount of data space. Increasing capacity should reduce costs, improve reliability and make the network more attractive to developers.

Economically, however, added capacity pushes the revenue test further into the future unless demand grows at the same pace.

This is not an argument against scaling. It is an argument for measuring scaling correctly. More capacity can create more total revenue if it enables enough new activity. A lower unit price does not necessarily mean lower aggregate revenue when the number of units sold rises dramatically. Cloud computing offers a familiar example. Infrastructure providers can reduce the cost per computation while expanding their overall businesses.

Ethereum needs the same effect from blobs. The network must turn lower data costs into a much larger volume of settled activity. If capacity expands faster than usage, the result will be abundant and inexpensive data availability, but limited fee capture.

The strongest demand may come from applications, not speculation

The most important signal will be whether blob demand becomes connected to recurring use cases.

Trading activity can produce intense bursts of data demand, but it is sensitive to market conditions. Token launches and incentive programs can fill blocks temporarily, yet their activity may disappear when rewards end. These events are useful stress tests, but they do not necessarily create a stable economic foundation.

Payments, remittances, gaming and social applications could provide a broader base. They generate many transactions and can operate continuously, especially if users are abstracted from the underlying gas payment process. Stablecoin transfers are particularly relevant because they connect blockchain infrastructure to an existing financial product with visible demand.

The challenge is that these applications are highly price sensitive. A payment system cannot depend on unpredictable fees. It needs a cost structure that remains low during normal conditions and does not break when usage rises.

That may actually suit Ethereum’s blob market. A target based fee system can keep prices low most of the time while charging more during periods of genuine scarcity. The question is whether enough recurring applications will arrive to keep the market near its target rather than below it.

Layer 2 growth does not automatically equal Ethereum growth

The industry often treats Layer 2 activity as a direct measure of Ethereum adoption. That is directionally correct, but economically incomplete.

A rollup can attract users while publishing relatively little data because it compresses efficiently, batches transactions or uses an alternative availability model. A network can also grow its own revenue through sequencer fees without generating a proportional increase in Ethereum fees.

This does not make Layer 2 growth irrelevant to Ethereum. Rollups still rely on Ethereum for settlement, liquidity and credibility. Developers may choose Ethereum aligned systems because of the network’s security and ecosystem. Over time, a larger rollup economy should create more demand for Ethereum’s services.

But investors and analysts need to distinguish between activity that strengthens Ethereum’s core economic position and activity that merely occurs in an ecosystem connected to it. The relevant metrics include blob gas used, the share of blocks reaching target capacity, the distribution of demand across rollups, average fees paid, ETH burned and the percentage of Layer 2 activity that ultimately settles on Ethereum.

Revenue quality also matters. A market driven by five large temporary campaigns is less robust than one supported by hundreds of applications that publish data every day.

A durable market will require discipline on both sides

Rollup operators have strong incentives to minimize their costs. They will improve compression, batch transactions and choose publication schedules carefully. That is good engineering, but it limits Ethereum’s revenue unless user growth outpaces efficiency gains.

Ethereum governance and protocol developers, meanwhile, must resist the temptation to treat every fee increase as evidence of success. Excessive pricing could push applications toward competing data availability networks or encourage rollups to reduce their dependence on Ethereum. The base layer cannot capture value by making itself unusable.

The durable strategy is likely to be a broad, competitive market with moderate fees, high utilization and many customers. Ethereum does not need every block to be expensive. It needs enough recurring demand that capacity has a clear opportunity cost and that blob fees contribute meaningfully to the network’s monetary economics.

That may take years. Infrastructure markets often scale in stages. First comes capacity, then applications, then recurring demand, and only later does pricing power become visible.

The next phase of Ethereum’s redesign

Ethereum’s blob market is not a simple scorecard in which low fees mean failure and high fees mean success. Low fees show that the network is delivering affordable data availability. High fees show that demand is outstripping capacity. Neither metric alone captures whether Ethereum is building a sustainable business around settlement.

The more important test is whether usage can expand fast enough to absorb new capacity while preserving the security and decentralization properties that make Ethereum valuable. Rollups must become more than fee reduction mechanisms. They must become durable businesses and application platforms that send a growing stream of data, users and economic activity back to the base layer.

If that happens, Ethereum could achieve a powerful outcome: cheap transactions for users, profitable infrastructure for rollup operators and meaningful fee burn for ETH. If demand remains weak, the network may still succeed as a public utility, but ETH holders and validators could capture less value than the scale of the ecosystem suggests.

The blob market has already proven that Ethereum can redesign its technology around rollups. Its next challenge is proving that this redesign can support a durable economic system. That will not be decided by a single spike in fees or one busy month of activity. It will be decided by whether data availability becomes an essential, recurring service for a large digital economy.

#Ethereum#EIP-4844#Arbitrum#Optimism#Base#Pectra#PeerDAS
Jessica Jones writes theUnhashed's technical explainers: how a protocol actually works, where its trust sits, and what a design choice costs. She covers consensus, scaling, zero-knowledge systems and smart contract security, and treats a specification as the primary source.

This article was written with the assistance of an AI system and published automatically.