Who knows, this may happen if the government agree bitcoin as centralized currency and centralized medium of money transaction. But bitcoin organization and miners will not allow this to happen as I know, because they are people get affected because of your mentioned future scheme in tax
To do it all then I think the Government also requires the confidential data in the bitcoin so they could freely to create a program that is the best and they could accept bitcoin as a whole. I think it is indeed something very fun and will give you a very good impact if all States accept bitcoin, subject to paying taxes. just wait for the future about this, hopefully very fun