I would say that if it were legally possible, and people were informed that many people would prefer Swiss Francs, Omani Rial, or Pounds over Dollars but the main reason The Dollar wins is because of liquidity, and force. Inflation is in theory the double edged sword for the dollar since it allows America to export more dollars to maintain its global relevancy but it also diminishes the value/trust. Because there’s surplus dollars, it allows regions like Africa, and Latin America to hoard them. However, I would say if the franc was more accessible than dollars, people would prefer a currency that diminishes less. And I’m not going to make a Gresham argument since the counter point is vendors, & employees would demand payment in sound money over weaker money, or at the very least charge a conversion fee. Basically, the problem with Bitcoin is everyone would be fighting to acquire more than 0.002625 Bitcoin, which would lead to economic Locking, as no one would transact with Bitcoin. Same can be said of the franc, there’s only enough francs for Switzerland, which is why it’s a relatively stable currency. Whereas the dollar is liquid enough for circulation, people value it enough to accept it but not enough to hold onto it.

No. People are retarded. Therefore not when it is not (en)forced on the people, which means it would need to serve the masters over the serfs. Yes. Maybe as an evolutionary process that plays out over centuries?