You can't stop the internet, so baning will not be 100% bulletproof. It is a good try, but t is still a try not the success.
I don't like to hear this, but one day they will lose control.
you can stop internet if you want to
China came as close as possible to that but they have their own reasons to be doing what they are doing
they haven't banned people from using cryptocurrencies,but they are regulating it in a different way
ICO,banks that were dealing with cryptocurrencies and exchanges one day found themselves outlawed