Ethereum fate will very much depend on its developers. They must have time to create Ethereum 2 before its main competitor, the BNB gain momentum. Also Ethereum growth is possible if you start a new alt season. But when it happens, nobody knows.
Obviously BNB has become a threat for ETH, and BNB had an amazing year already which I think it will have a big pump in the last quarter also.
ETH might release their ETH 2.0, but is that big enough for the project to grow again?
We will know once it's release but the hype is gone, the last time it cause some rise of ETH but it seems like people are not talking much about it anymore.
So for me, it's really necessary to satisfy people on the proper timeline of the upgrade release and should not make promises when that it will be delayed in the end, or tell people that it will release a new version but no timeline on when.