I believe that ETH will reclaim it's glory back once gas fee issue is solved, there is also a big difference between BSC and ETH that will still make many prefers ETH, that's the fact that BSC is Centralized and ETH isn't.
Honestly ETH really much more powerful than BSC
1.2nd to Btc
2.MyEtherwallet connection that connected to all Tokens
3.People's best of users that BTC compete of it.