In my opinion best way for prevent scam projects is teaching investors. Newbier investors dont know anything about projects and they are immediately investing some projects with their money. That is very wrong. We should help these newbies with some telegram groups or with some more effective way. I am always trying to teach something to newbie investors and already i teached too many things to my 15 friends and all they are good investors now with knowledge. Nobody can not regulate decentralised space only we can teach eachother.