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.
Ethereum has long been the king of altcoins. Because of its brand and its long standing. The comparison in value is superior. But now many investors are interested in ethereum fees that are too expensive. So they choose BSC because its fees are cheaper. That's one of the BSC's points.
Currently, BSC also has the potential to increase prices. It's worth the investment.