币界网报道：Ethereum is grappling with DeFi challenges as multichain fragmentation intensifies, with users migrating to alternative Layer 1 and Layer 2 networks due to high gas fees and scalability limitations. While Ethereum still dominates with over 50% of DeFi's total value locked (TVL), competitors like Solana, Avalanche, and Polygon are gaining traction by offering faster transactions and lower costs. Analysts note that Ethereum’s upcoming upgrades, including EIP-4844 and full sharding, aim to address these issues, but delays could further erode its market share. Meanwhile, cross-chain bridges and interoperability solutions are becoming critical as DeFi expands across multiple ecosystems, though security concerns persist following high-profile hacks. The competition highlights the broader industry shift toward scalable, cost-efficient blockchain infrastructure.