In 2018, Ethereum suffered an unprecedented blow, and maybe it will no longer be able to take off. But if it doesn't change, it will lose its original value. Be aware that ICO is being drastically reduced. Ethereum may be transforming into a strong stable currency. If so, he will exceed all stable coins. This may be the best way of Ethereum.
Well, that was expected with the number of scam coins that came into play and the fact that a lot of projects may be looking to hedge their funds pretty fast anyway. Nevertheless, there is nothing that will stop Ethereum from growing in the long run as long as there is no form of lag or lapses with development, which I believe we have been seen some interesting news lately from Butterin.
Ethereum has been the most used platform for smart contracts, and with more development in the protocol, I want to believe this would usher in more growth for Ethereum in the long run. There are other competitors though, but it would take a lot to be able to beat Ethereum to it, and that is if Ethereum ends up lagging behind in development.