Ethereum’s scalability challenges are well-known, and the development of Layer 2 solutions like Optimism and Arbitrum is crucial to its future in DeFi. These solutions aim to increase transaction throughput and reduce fees, making Ethereum more competitive with faster, cheaper chains. If Layer 2 solutions are successfully implemented and widely adopted, they could mitigate much of the competitive pressure from emerging blockchains. However, the threat remains that if Layer 2 adoption is slow or if these solutions introduce new complexities or security risks, users and developers might migrate to other chains that offer a simpler, more efficient experience. The success or failure of Ethereum’s Layer 2 scaling will be a pivotal factor in determining whether its DeFi dominance is巩固 or eroded.