Eth is a success, it's not that volatile, it's almost stable and eben though bit hardly keeps up with BTC it has its own plan too. We shall wait with the current situation of high Eth gas, there's more to come with eth. It will have a long life, just look at how many contracts and projects under Eth network, and it's incredible increasing.
Ethereum fundamentally and also the current ecosystem is already very strong and good. can't "Die". There are quite a few people investing their money in Ethereum themselves now. and in terms of trading volume it remains high. So if we say Ethereum won't sell that is a wrong thing. There are hundreds of high volume tokens on the ethereum network as well. although constraints in transaction fees make many people complain