Even if it is fully regulated, scammer would still think of ways to exploit the system, I think we shouldn't go for regulation because people are getting wiser and know to stay away from scams.
Regulations may seem to be targeted at scammers but most of the time that is not the case, regulations are aimed against the average person, just look at the fact that now you are required to pass KYC before investing in most icos, the developers of the icos can still create their projects without revealing their identities but now an investor not only needs to give them their money but access to private information that is arguably even more valuable, those regulations were obviously created not to stop scammers but to find out who is holding a fortune in cryptocurrencies.