It's true. We've had plenty of time to make crypto or blockchain viable for production use and it hasn't found a home anywhere. I think PayPal doing crypto transactions is make or break for it's prospects as an actual currency.
In before someone posts that Krugman quote about the fax machine.
I've always wondered what to make of that quip because for the space of about 10 years, between 1980-1990 give or take, the fax machine was critical infrastructure for basically any business with a telephone line. faxes were a major deal and are still very much essential in certain fields