Vitalik Buterin told that 90% of proects will dead after few years. I agree with him, because a lot of people see ICO as good instrument of collecting money for life on islands.
Already there are analyst studies that show that a huge number of projects are closed down for 2 months after the completion of the fundraising, which is about 86% of the total. It is therefore not surprising that everyone is trying to sell coins as soon as possible.