Everything can happen in the crypto world, but to be able to conquer eth is not easy. There have been many altcoins that have been claimed to be better than eth but still they have not been able to conquer eth until now.
The strength of Ethereum that is difficult to compete with is their very large and solid community, and most of them are people who are already experts in the crypto world.
yes, I also believe anything can happen, and the crypto world is vulnerable to that. It's just that, there are so many coins that currently have potential but cannot replace Ethereum's position. because of that, I am not so sure that the new coin will replace ethereum. Well, maybe it could happen, but I don't think it will happen in the long run as was the case with XRP.