ETH miners seems like a cult group who love to see the outricious gas fee the network, despite all the upgrade and forks, gas fees still remain rediculously expensive. The market that ETH would have been controlling alone has already been shared but a total defeat is not clearly visible because of first mover advantage, continuous development of the network and massive offchain support, it will be difficult to display ETH from number 2 position by any competitor.
Acceptance of ETH by a wide number of organisations and it's popularity alone can make it outstand in the market. Other coins except BNB aren't even close to ETH in terms of development of the project and also support.
Other than BNB I guess there is no second alternative to ETH currently, maybe there would come better projects in the future that can take the place of ETH in the future.