I think the word "support" is difference with "legalize". If government legalized something, it doesn't mean that government support it. If the government really support bitcoin, so I think they will introduce it and build facilities for bitcoin to their people. I never heard a government do that before. Please correct me if I'm wrong.
Indeed it is different but you should note that you are getting the wrong idea there. Government support and create FIAT but do they build bank ? YES to get a profit from FIAT. With
BTC you will never getting the same treatment because
BTC isnt a centralized currency which is issued by a country, it is uncorrelated with any authority at all therefore getting legalized is actually a huge stepstone for
BTC already
So I can say that govenment never want to support it since it can't be controlled by them. They just let people using it, but won't take any responsibility if their people get scammed or hacked on their wallet.