ETH gas fee became high because of it's current price, the fee increases it's value as the eth price increase. Not planning to promote, but many people said that ADA(Cardano) is trying to do something to replace ETH.
Not only Ada but if ever Ethereum cannot solve this issue, Binance, Tron and Waves are some of the options, ADA and Binance are two of the closest competitor Binance is on the third spot, and , many eyes are on Binance now, we'll see how things will play out if Ethereum will solve the issue or another chain will take over.
Binance is kind of centralized coin which doesnt suit to our crypto community, it will last for long until community realize that and choose another decentralized platform.
Also, ETH 2.0 will solve all the issue we have at this time, if not then EOS or DOT will be the alternative.