But it seemed pretty obvious to me more than a decade ago what cryptocurrency would be useful for. I remember the ideas flying around in the early days.
It's been a bumpy road...but then, I also remember through the late 90s (and especially after the dotcom crash) when there were countless takes on how the Internet (and PCs in general) had been vastly overhyped. "Computers were supposed to eliminate paper, but we're using more paper than ever! We were supposed to do all our shopping and get our news from the internet, but Sears is thriving and I still get my daily newspaper every morning!"
Somebody could absolutely have made a book out of all the overpromises of the "Internet Superhighway" era.
The path to general use for cryptocurrency has been, and will continue to be, rocky. Moreso than the net. It inherently involves money--lots of money--and so it's been rife with scams. "Nigerian Princes" on steroids.
But I can tell you guys: before the rush of investors and crazy bubbles, before the scams and collapses, long before hucksters like Trump got involved, there was a group of people to whom the potential of cryptocurrency seemed obvious.