Everyone is speculating on what is going to happen to the Ethereum price after the merge and trying to figure out several things surrounding it. It is clearly a huge event both for miners and the entire crypto ecosystem. Miners are going to have to find other coins to mine which is very rough during a bear market. It will cause a lot of them to be very unprofitable. The other thing that hasn't been talked about that much is the premise that there will be a huge inflation bomb that will hit the exchanges because what about all the rewards that the people who staked their coins on the beacon chain will end up having to deal with? Also some exchange services like Kraken allowed people to stake their Ethereum on there so all those additional coins could hit the exchanges. I guess that isn't happening for several months.
Another question is if the chain will really have improved usability over what the EVM chains have such as the Binance Smart Chain, Avalanche, Solona, Fantom, Harmony ONE and also the layer 2 solutions such as Polygon.
Personally I think that people should keep Ethereum in their stack and there is enough attention and hype around this whole thing that people will ultimately chase after it despite those coins coming in from staking rewards from the Beacon chain and miners potentially becoming unprofitable having to find something else to mine which could cause them to have to sell some of their stack as they get pressed out through the bear market.