Reasons to be optimistic about interoperability between chains:

As major L2s are launched one after another, Arbitrum 1.3B TVL Optimism 900M... Zksync Starknet will definitely attract a lot of TVL. With such fragmented liquidity, the future of inter-chain interoperability has never been clear:

The secret of DeFi is composability, and inter-chain interoperability is the composability between blockchains

Long interoperability