> Physical currency is an absolutely vital component of a stable economy. Its very lack of instantaneous fluidity (it relative inconvenience) means it acts like a capacitor to stabilise markets if you can manage circulation and interest. Moreover, governments have a strict monopoly on that, and physical currencies can take on many new guises with modern cash technology. Abandoning that would be suicide.

Governments are made of individual actors, in the US these are often buying cryptocurrency. Their friends have invested in and built cryptocurrency companies. They hold investments in cryptocurrency companies.

Cryptocurrency IS the capacitor you're talking about, the policy of the US is showing this more weekly.