Bitcoin becoming a global digital currency is what most crypto analysts and enthusiasts hope it become so but currently it has to go through several stage of testing by countries to see whether it is actually sustainable to be used as a currency. Currently South Korean has opened its doors to cryptocurrencies and so does some African countries like Zimbabwe also running bitcoin ATM machines
Russia will not, because many people do not have a good income. And forced to live in poverty. And the rich can afford it. Use cryptocurrency