Do not be so sure about this, governments really can not be absolute owners of all currencies and controls, with many people worldwide who operate with bitcoin and altcoins, even large companies, in the end will end up adapting, accepting the versatility of the currency and the benefits it offers to individuals. That yes, they will continue with the idea of ​​implementing their own taxes on this, but I do not think they can in general eliminate the physiognomy of virtual currencies.