Features of cryptocurrencies are such that their complete ban is impossible in principle. The main reasons for this are two: cryptocurrencies are intangible and decentralized. Tangible money you can withdraw, you can stop the issue process, to prevent equipment emissions, because it is not even every hundredth person. It is almost impossible to withdraw cryptocurrencies by force, and to stop their emission, roughly speaking, it is necessary to take away computers from all people. Centralized currencies can also be destroyed or radically altered, as this will require influencing the authorities that provide centralization. Decentralized currencies can not be destroyed, modified and controlled in this way, because it is impossible to influence all holders of cryptocurrencies at once.