Tulips is a nice rebuttal.
The problem is that tulips did not fundamentally change the flower business. You can make fun of bitcoin, but the technology behind it is already changing the world of financial interactions.
You say that like it's a good thing. I am more up on AI than most, and I see something like "skynet" as far as the eye can see.
This is a matter over which I have given much thought in the last decade, and I feel as if people are going insane over technology. All I see is more and more control moving in the direction of a smaller and smaller oligarchy with each passing year.
We are literally building our own dystopia with these moves.