It hard for the banking systems to take place when it comes to cryptocurrencies, since it bypasses the banking system and the goverment losses control over its economy. Same thing happend in Ukraine and Russia some months ago. They try to hunt down miner but they dont make it illegal to use bitcoins yet, since theyll be left out and lose a lot of money. I other countries you can even rent a room in a hotel using cryptocurrencies like dogecoin