I can see that eventually a crackdown will come but I just cant see how this will have any meaningful effect without a co-ordinated effort between a large amount of world governments. They are too busy positioning themselves to go to war at the moment. We would need the USA, Russia, China and a whole host of other world powers to work in coordination and I just cant see that happening...yet
China's already shut down everything, South Korea have squashed ICOs, it's a dead cert that the US will crack down, more than likely the EU will too. Anywhere else that hasn't may join in to avoid feeling left out.
I don't think many or any regulators will leave the door open to such a flagrantly scammy area. A one page website and a shitty idea should not be all you need to attract millions in other peoples' money with absolutely no recourse.