We'll see what will happen after the PoW is replaced, but then the whales will play a big role.
It is not that easy to completely stop using eth when you still have some erc20 in your wallets, and some of these tokens don't support other chains yet, hence you will be left with no choice than to use gas anytime you want to trade such tokens. i have some erc20 am not able to trade because of high gas fees, for now i will keep holding them until when the gas fees has reduce (hopefully it will).
BSC came at the time an alternative was needed, the situation with eth high gas was difficult for investors.