Statistically speaking the biggest blocker for those who are interested in bitcoin is that there is a lack of investor protections currently I don't have a link but I beleive it was a coindesk article but I could be wrong.
It's all about money, as long as crypto currency can provide it then I guess it's done. Well people got interested into a system that can give them what they want. Basically, crypto was built to give us income and I think that is the asset that it has. Whenever crypto is beneficial is making profit then people will be interested to it.