In my country, everything is fine with crypto-currencies, unfortunately many countries today can not decide what they need to do with blockchain and how they need to do all the same to introduce crypto-currencies into their economies, I think that in general it is not it's difficult, it's only a matter of fear that it's impossible to control
Many countries have been trying to develop blockchain further and will probably integrate or embed blockchain to their governance system, one of my country's local bank even says that the use of blockchain could benefits efficiency and speed up transaction.
Actually if we are talking about blockchain, so many countries really welcome it, they think blockchain as a revolutionary idea, but bitcoin could potentiall threat their economy if it's legalized especially third world country.
Blockchain is new and my country is not so famous with it yet.
Apart from a few companies and a large number of sectors, the number of people with ethical knowledge about these types of money is even less. We often see cryptocurrency use in the real estate and currency sectors, but as I said, these are very rare and many people do not know about it.