The recent announcement by Zero Network regarding its operational shutdown last month triggered a weary reaction across the crypto industry, marking another casualty in the Ethereum layer-2 ecosystem. This closure joins a growing list of struggling rollups and has reignited a critical debate concerning whether the sprawling network of Ethereum scaling solutions has become excessively crowded.

Concurrently, Ethereum creator Vitalik Buterin has urged developers to fundamentally rethink the network's long-term scaling roadmap. Several major projects have already shifted their strategic positioning away from marketing themselves as general-purpose blockchains, pivoting instead toward focused applications in payments, stablecoins, and tokenized assets. To many observers, these developments revive a persistent question regarding the saturation of the layer-2 landscape, though industry participants argue the situation represents a necessary consolidation rather than a systemic failure.

Ben Fisch, co-founder and CEO of Espresso Systems, articulates the prevailing industry logic by noting that anywhere a smart contract runs on an existing blockchain, a layer two could equally operate. He posits that the market is currently undergoing a consolidation phase specifically for general-purpose layer twos, not for layer twos broadly. The explosion of Ethereum layer-2s over the past several years was driven by improvements in rollup technology that dramatically reduced the cost and complexity of launching new chains. Rollups function by processing transactions off Ethereum's main blockchain, bundling hundreds of them together, and periodically posting compressed transaction data back to Ethereum for settlement and security. This model enables applications to offer faster transactions and lower fees while relying on Ethereum as the ultimate source of trust.

The result was a flood of networks built using infrastructure stacks such as Optimism's OP Stack, Arbitrum Orbit, and zkSync.

However, while the technical barriers to launching a chain lowered significantly, attracting users proved to be a much harder challenge. Fisch argues that there were far too many general-purpose layer twos that do not make sense as products because there is no logical reason to maintain many versions of the same thing. Data compiled by Woofun AI supports this view, showing that activity across Ethereum's layer-2 ecosystem remains heavily concentrated among a handful of networks. Base and Arbitrum alone account for more than 80% of layer-2 DeFi total value locked (TVL), . This concentration has become increasingly apparent as smaller chains struggle to maintain liquidity.

Over the past six months, networks including Linea, World Chain, Starknet, and Mantle have all seen declining bridge deposits. Linea's deposits, for example, fell from $976 million in November 2025 to $367 million in May 2026, representing a decline of more than 60%. Alice Hou, a former research analyst at Messari, stated that only a few L2s with clear financial demand will be able to sustain themselves over time. For Hou, the key issue is not whether layer-2 technology works, but whether a network can generate enough activity to justify its existence. Without sufficient blockspace demand, user activity, or developer traction, there is little reason to continue maintaining an L2. Ironically, the economics of launching a rollup have never looked better due to Ethereum's Dencun upgrade introduced in 2024.

The Dencun upgrade dramatically reduced the cost of posting rollup data to Ethereum through blobs. According to Messari research, data availability costs now represent only a small fraction of operator expenses for many OP Stack chains. From an operator perspective, it is definitely cheaper to run an L2 today, yet the real challenge remains generating enough sustained demand to make the network worth operating. This dynamic has created a paradox where barriers to creating a blockchain continue to fall while barriers to attracting users continue to rise. As a result, many teams are discovering that simply offering another Ethereum-compatible chain is no longer sufficient for success. Woofun AI notes that people have realized all different general-purpose blockchains compete with each other, necessitating the building of differentiated applications to survive.

The shift is already visible across the industry as several blockchain projects that once emphasized infrastructure increasingly focus on payments, stablecoins, tokenized assets, and other application-specific markets. Traditional financial institutions may become some of the biggest beneficiaries, with asset managers launching tokenized money-market funds, stablecoin issuers, and tokenized deposit platforms serving as examples of businesses with clear reasons to operate on-chain. For those firms, a dedicated layer-2 can offer lower costs, greater control, and more predictable performance than deploying directly as a smart contract. The technology decision to run as a layer two is simply an option of running an application onchain, according to Fisch. Hou agrees that distribution matters more than technology, asserting that only L2s with a solid existing user base and a clear reason to benefit from blockchain infrastructure should launch their own networks.

This helps explain why exchanges remain among the strongest candidates, with Coinbase's Base becoming the dominant example by leveraging the exchange's existing customer base while integrating users into Ethereum's broader DeFi ecosystem. The question should not be whether a company can launch an L2, but whether the business already has enough distribution, financial activity, and ecosystem synergies to make an L2 meaningfully useful. The debate also reflects a deeper disagreement about what layer-2s are actually for. For years, Ethereum advocates framed rollups primarily as a scaling solution for Ethereum itself, but Fisch views them differently. He does not view layer twos as scaling Ethereum, but rather as leveraging the existing security properties of layer one.

In that framework, Ethereum functions less as a destination and more as a settlement layer that applications can use when it makes sense. Ethereum is sort of a commodity that layer twos can choose to use. That vision aligns with a broader trend unfolding across crypto infrastructure where projects increasingly treat blockchains as modular components that can be assembled into larger products. Woofun AI analysis suggests that if this trend continues, the future Ethereum ecosystem may look very different from the one imagined during the rollup boom. Instead of hundreds of competing general-purpose chains fighting for liquidity, the winners could be a smaller number of networks tied to specific businesses, financial products, and user communities.