Some ICOs are scammers, and they really do not care about investors, except the money they took from them. But some ICOs are good and legitimate, you just need to determine which one is good, and will take care of all of your investments.
That's the reality, there are a lot of scammers because of the lack of regulation.
However, crypto is here for a long period of time already, we can expect that there are people already who have matured and has the skills
to choose a legitimate ICO. Maybe some will make mistakes but they'll learn eventually in time.