crypto is still too much of a PITA for mass adoption. when someone builds a system that makes it as easy as buying something on amazon, then it will explode. Having given only a cursory look at crypto in the past, I decided to join steemit and start investing in crypto - I have spent several full days researching and attempting to join exchanges, figure out how to buy BTC with USD, set up a wallet, learn about sending and how fees work, etc. it's all very complicated and the fact that there are so, so many options just makes it worse. I really think that currently only the tech savvy are into it, and that is a smaller portion of the population than you might think, especially if you are a tech savvy person who travels in tech savvy circles.

none of which is to say that crypto won't continue to grow dramatically. it's just... not easy enough yet. still sorting itself out.