I think it won't take place for currency where mostly use it only for virtual purposes even govt won't support this as it will vanish fiat currency so bitcoin will stay like right situation.
It is obvious that they would not accpt Bitcoin as their fiat currency in theor country. Who would want to use a currency that can be manipulated by the whales, amd that also means that their economy will be controlled by that certain manipulator. Bitcoin will never be a curremcy of a state or a mew state, it will stay as an investment.