Polkadot was a project that aimed to replace Ethereum by providing a fast and cheap network and a better structure for smart contracts, and verification at the protocol level does not make there a need for second-layer solutions. The near future does not suggest that Polkadot will achieve anything better than Ethereum, and I have not heard anything about the future development of this blockchain, so it will not have a high value.
I agree with you that polkadot will become a competitor to ethereum in the future, but honestly I'm not sure if polkadot can beat ethereum's popularity, even though polkadot has great potential to grow higher, but I don't think it will be able to match ethereum's growth, even so currently I am very optimistic that polkadot will always be in the top 10 CMC in the future,