Layer 2 solutions can still be useful even if #Ethereum has become faster and cheaper. They can add additional scale and efficiency, making transaction fees even lower and transactions faster. #Layer2 solutions may still be used for dense applications or for specific use cases that require larger scales than Ethereum can handle.
Layer 2 solutions might have specific roles in handling particular use cases that need unique features or functionality. For example, there are Layer 2 solutions optimized for DEX, games, or privacy-focused applications. Even if Ethereum becomes fast and cheap, developers may still choose Layer 2 solutions that have specific features or are better suited to their needs.
The Ethereum ecosystem is vast and diverse, and Layer 2 solutions can contribute to this growth and diversity. Different Layer 2 solutions have their own strengths, compromises, and community support. Even if Ethereum becomes scalable, developers and users might prefer specific Layer 2 solutions based on their preferences, needs, or existing infrastructure.
Layer 2 solutions could serve as a bridge during the transition to a fully scalable Ethereum network. As Ethereum evolves and improves, it may take time for all applications, developers, and users to shift to the new infrastructure. Layer 2 solutions could serve as an interim solution offering better scale and efficiency while the Ethereum ecosystem adapts to these changes.
The development and adoption of Layer 2 solutions are ongoing processes, and their future depends on various factors, including the development of Ethereum itself and the needs of the user and developer community.