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.
I dont think failed project affecting ethereum because investor must be know the different. I think the ethereum price drop because market condition a several months ago. But at this moment, i think ethereum still popular coin with more competitors. Time will tell us who survive and have great achievement