If bitcoin will include the feature of automatic tax (some small percentage of each transaction) to be transferred to the dedicated state's fund of the state, for example, where IP of confirming node's belong (or any other localization schema) - that will definitely lead to all states accepting crypto.
No need for that.... each country have their own tax laws and this will add additional costs to Bitcoin if this was implemented.
In my country, Bitcoin is seen as a commodity and you pay taxes on Capital Gains for all the investments you do on regulated
exchanges. If you use Bitcoin to buy something, you pay VAT on your purchases. I think, they get their fair share already.
