Polkadot and Cosmos

Some of the other smart contract platforms (I don't like the word Eth-killer; I think the future is multichain) are starting to finally create cool apps and services and communities. solana and bsc both have solid ecosystems of builders. maybe in the next few years, another one like algorand or cardano or icp will get off the ground. in any case; it would make a lot of sense that interoperability protocols; parachains, bridges, zones; are a worthwhile time to invest in learning about.

what do you guys think of polkadot and cosmos and their future role in the multi chain web 3