i have no idea if there is reason except gain profit from what they invest
another reason maybe doing invest for their project its self
sadly many investor nowday just wanna get instans money
they dont really care about the project
i think that the reason why many ico fail after the ico end
investor not support the project
they just care about their money there
There are too many projects out there and it gives an opportunity for investors to make fast profit at one project and then move to the other one to get more profit. Dead project will be so common.