The modular L2 project Caldera recently published a forward-looking article on the future development of Ethereum scaling solutions. The article depicts a possible blockchain ecosystem dilemma in 2035: millions of EVM rollup chains are scattered across several powerful rollup frameworks, but lack a neutral and seamless way to connect. Each framework acts like a city-state with complex rules. Due to frequent bridge attacks, users tend to stay within their own ecosystem. Caldera believes that Ethereum currently faces similar challenges to the Internet in the early 2000s, namely the difficulty of achieving seamless communication and interoperability between different networks. The article points out that each new rollup introduces its own safety classifier, increasing systemic risk; the rollup ecosystem is currently siloed and lacks a scalable neutral solution across frameworks; developers have difficulty building applications on multiple rollup frameworks simultaneously. Caldera calls for the establishment of a connectivity layer between rollup frameworks to achieve large-scale composability and interoperability on Ethereum.