Ethereum could've been the best platform but unfortunately about 90% of all the projects that were built on the blockchain failed and as such it's affected Ethereum itself badly. Now, Ethereum can't even keep up with Bitcoin's price chart anymore. It's behaving as a normal altcoin though it wasn't doing so before. Buh well, you can't emphatically predict the future of any crypto coin/ platform but personally, i don't think Ethereum's future is all that secure. It shall be threatened real hard.
a lot of project created on ethereum blockchain failed, but thats not the fault of ethereum foundations my friend
a failed project is because the project didn't have a good team, in marketing, development and others
so why a lot of project failed is because the project itself,
maybe ethereum price will affected, but i'm sure ethereum will always be number 1 smart-contract platform now and in the future