Hear me out: I think we got too popular too fast. The normal person on the ground would expect to use crypto much more for daily-life transactions but this is not currently the case. Maybe we needed some more time for the technology to mature (no scaling issues, slow transactions, etc) THEN the normies come in. Right?
It was a mainstream since it is spamming all over the social medias that you ever see, even in youtube ads you can see some ads about crypto currency and other ICOs but then it was banned to some social medias because of their excessive spamming all over the platform. But if you remember those days were prices are too low, most people are not aware about it because it was just nothing even if they already heard about it.