I think this bubble was different and rather like the 1999/2000 dot com bubble. Some real companies like Google and Facebook rose from the rubble but the situation where any stupid thing with .com on the name could float for a fortune never returned. I imagine crypto will play out something like that with the stupid ICOs gone but some real stuff of value coming about. I'm guessing bitcoin is like Yahoo - it will continue but the flaws will do for it eventually.