Zero Network’s shutdown last month quickly fed a familiar narrative: another Ethereum layer 2 is gone. The event revived arguments that Ethereum’s L2 ecosystem has become overcrowded. At the same time, Vitalik Buterin has been urging developers to rethink Ethereum’s long-term scaling path, while several large projects have moved away from presenting themselves as general-purpose blockchains and toward narrower use cases such as payments, stablecoins, and tokenized assets.
The pressure is on general-purpose L2s, not the entire category
Some builders reject the idea that layer 2s as a whole are in decline. Ben Fisch, co-founder and CEO of Espresso Systems, said the market is going through consolidation in general-purpose layer 2s rather than across the broader L2 segment. His point is simple: anywhere a smart contract could run on an existing blockchain, a layer 2 could also be deployed, but that does not mean the market needs endless versions of nearly the same product.
Rollup technology made this possible. Over the past several years, improvements sharply reduced the cost and complexity of launching new chains. Rollups process transactions away from Ethereum’s base layer, bundle them together, and periodically post compressed data back to Ethereum for settlement and security. That structure lets applications offer faster execution and lower fees while still depending on Ethereum as the trust anchor. Infrastructure stacks such as OP Stack, Arbitrum Orbit, and zkSync helped trigger a wave of launches. Building a chain became easier. Winning users did not.
Liquidity and activity are clustering around a few leaders
The market data points in the same direction. According to DefiLlama, Base and Arbitrum together account for more than 80% of layer-2 DeFi total value locked. That level of concentration leaves little room for smaller networks to build durable liquidity advantages.
The pattern has become clearer over the last six months. Bridge deposits have declined across Linea, World Chain, Starknet, and Mantle. In Linea’s case, deposits fell from $976 million in November 2025 to $367 million in May 2026, a drop of more than 60%. Once liquidity weakens, user activity and developer traction often come under pressure as well.
Alice Hou, a former research analyst at Messari, told CoinDesk that only a small number of L2s with clear financial demand are likely to sustain themselves over time. For her, the core issue is not whether the technology works. It is whether a network can generate enough activity to justify operating at all. Without sufficient blockspace demand, user engagement, or developer momentum, the case for maintaining an L2 becomes thin.
Dencun cut operating costs, but demand is still the hard part
The twist is that the economics of launching a rollup look better than they used to. Ethereum’s 2024 Dencun upgrade sharply reduced the cost of posting rollup data through blobs. Messari research says data availability expenses now make up only a small share of operator costs for many OP Stack chains.
Hou said it is clearly cheaper to run an L2 today from an operator’s perspective. That does not solve the harder problem. Lower barriers make it easier to launch a blockchain, while competition makes it harder to attract and keep users. Many teams are now confronting the same reality: offering one more Ethereum-compatible chain is no longer enough to justify a network’s existence.
Fisch framed it plainly. General-purpose blockchains are competing against one another, and success now depends on building a differentiated application. What is being tested is not the viability of layer 2 technology itself, but the future of undifferentiated general-purpose chains with no strong source of demand.