Regulasi aren't a golden bullet against scammers. As all those things become more obvious to the general public, scammers evolve to mimic decent projects with almost impeccable efficiency. Still, the most reasonable rule of investment isn't about ICOs or IPOs, it's just about your common sense. I mean no matter what, never spend more money than you can afford to lose.
It is just a thing that will always happen. Scammers won't stop trying to fool gullible investors into losing their money on shady investments. The onus is on us to wise up and see through the mist of scam they push to us. As for me, I need to see your project is already working before I put money on it