Polkadot has been growing to be a mature blockchain for interoperability. A lot of bridges and the converters can be created from this blockchain. Future definitely looks good for the Polkadot type of the parachain based blockchains. I have written a comparison between the ETH and DOT, do check it out if you want :) Check out the article: https://hive.blog/hive-167922/@esmeesmith/polkadot-dot-vs-ethereum-eth https://leofinance.io/@esmeesmith/polkadot-dot-vs-ethereum-eth