Yeah, sometimes is like that. Anyway please don't invest in ICO that make an impossible promise. In my opinion, every ICO that promise ROI more than 100% in a month or create something that not even invented yet yadda yadda yadda is a scam.
Some of them are really great though, make a reasonable promise and fulfilling what he promised. Always do your own research before making an investment.
And now the IEO is born, it might be difficult for those projects that are purely design for pump-and-dump because investors grew tired and since we have a new hype with IEO and much promising then don't be surprised if ICO will be obsolete in the coming years.
IEO has its own advantages though like it's listed on an exchange if they want their coin listed they have to complete KYC first so that's being said its almost impossible the team behind that coin/token is fake.