Ethereum still accounts for 90% of revenue as Layer-2s face difficulties.

Although the Ethereum ecosystem is expanding with many Layer 2 (L2) networks to fall fees and increase scalability, data shows that the deployment of DeFi across all these networks is not always financially effective.

According to DefiLlama, over 90% of the revenue from top protocols still comes from Ethereum Layer 1, while contributions from L2 are very small. Aave, the largest DeFi protocol, generated over 65 million USD in fees in July 2025, but most of it came from Layer 1, which holds nearly 29 billion USD TVL. In contrast, L2 networks like Scroll and Gnosis only brought in approximately 46,000 USD and 93,000 USD for Aave, respectively. Curve Finance also reported that most of its revenue comes from Ethereum, with L2s accounting for a small proportion. Data shows that profits from many new L2 networks are still quite limited.