Do the government can not make a regulation to impose the collection of tax to cryptocurrency as billions of dollars passes everday to the users and investors who transact that huge money then it should apply to the users who do bitcoin transaction. This can make possible to the government if they pursuit a laws that addresses the cryptocurrency users to be taxed.
Actually they can, backed up by laws on tax on revenues. When a transaction on exchange sites commence, there are fees, those fees are subject to tax already, but it will be on the part of the exchange sites and not on the part of the individual bitcoin users. Fees being deducted to the account users, tax deducted from the site. Too bad, tax are passed on the consumers thru high fees.