I dont think that it will happen to ethereum. Ethereum is stable compared to bitcoin for the past months. You dont need to worry. As long as there are good ICO that is using ethereum as their platform, ethereum will be one of the most important coin in the crytoworld. Youre thinking that ethereum will collapse in no time i doubt it will ever happen. Ethereum is keep on improving every year. Thats why ethereum is indemand on different ICO because of the characteristics of the ethereum and the continuous improving so that the community will benefit.