it's true that ETH is still undefeated and not even one of the selected coins can beat ETH any time soon.
However, if we look at the ones that have the most potential to be like Ethereum in the future, I think Luna and Polygon have a very big opportunity to be able to compete with ETH in the future because developments that are being carried out now continue to run on a positive trend and are able to slowly attract the crypto market.
Polygon certainly does have an edge over others because it managed to fill a need that people had. Its basically ETH but cheaper version right now where people do use ETH but use it on their network instead. Look at opensea, there are so many projects that use polygon these days. Its all matic here and matic there, the network is getting incredible attention. I do not believe that it could go on forever, I do not see it being amazing 10 years later, I believe ETH will fix this gas fee issue and thats when this will stop being good. This is the only reason why I do not invest into polygon and still keep it in ETH instead.