Perfect! So everyone that could not provide any services or sell any goods would not have the posibilites to buy bitcoin at that time. This would make the transition to the time where fiat is no more very complicated... while there are probably 1000 other things to be worried about at that time.
But lets say we would want the world's economy to be completely decentralized with no fiat, and no inflation politics. How could we create a smooth transition where there won't a complete havock?
In theory, there are certain ways but in reality, it won't happen. There is a government that has authority over things here on earth. Besides, there are different authority that has different views and beliefs that often contradicts themselves. This is another reason why there are different global organization because not every one are in agreement with each other. With this situation in hand, it is impossible to create a transition from centralization to decentralization let alone the government accepting decentralized currency to dictate its financial activities.