Often times it is peoples own fault for being scammed. Their greed takes control of their brain. You can't blame ICO for that. They willingly hand over their money and some even hand over personal details along with it.
How ridiculous is that? There many decent projects the thing is people lose momentum and give up on them.
this not just about people greed of money, some people are interest with the future of project ad trying to invest.
the problem is from developer that scammed investor they are cheated investor confidence