The problem here lies in the fact that the creators of a project can create fake accounts and buy coins from themselves, and there is not way to prevent that kind of practice without any type of regulation that involves verification of IDs.
That's why I think that, in the future, if ICOs will continue to exist, they will be regulated.
Yeah, if scammers are extremely motivated they can go to huge lengths to look real. However, this guide should cover at least 90% of the scams. The really good scams are even hard for pros to detect.