OK, let's say crypto is good money like gold is good money. Issuers of fiat money can destroy the value and always eventually have by creating too much of it since there is an unlimited supply. Gold cannot be created and has been accepted the world over as money for thousands of years and still is. It has several traits that make it useful for money such as non corroding, easily portable, limited but not rare, and recognized and valued the world over. I don't quite understand crypto but supposedly its supply is limited so we can I guess call it digital gold. The governments of the world have proven they can force gold out of commerce like our USA did in 1933. Governments have to use force to require good money not to compete with their fiat money. Which brings me to the question of what is there to stop a government from outlawing the use of crypto and shutting down internet trading of it?
The only way to shut down internet trading of it is to shut down the internet. They could make it difficult and inconvenient, which would almost certainly have a negative effect on price, but you can't stop it. China has been trying for a long time, and still hasn't succeeded.
