ICOs are a novel and still developing form of capital raising. For legitimate projects ICOs are a great alternative to traditional VC funding due to flexibility and not giving up equity ownership. The money does not come for free. The team needs to execute the project and keep token holders happy. I have never come across a fake ICO where the founders ran away with the money. If those are the ones you are seeing, you are not researching properly beforehand. Should be able to tell if the team is allstar from google searches, Linkedin etc.