many coins are starting to be speculated to exceed ethereum, as deFI tokens are always rumored to compete with ethereum. But the reality is that Ethereum is too strong in the market and Ethereum hasn't been able to be swayed by any coins. we only need real and accurate proof of a token that will compete with ethereum or even surpass ethereum so that it is not an issue
It's hard to predict that and what will happen. There are a few projects that in theory are better option that ETH but still they dont deliver. ETH will stay at top for long time but like I mentioned before there are some projects that have potential.