People will choose bitcoin but more cryptocurrencies included, but the world is complicated, what makes the world more complicated are humans, like see the case of El Salvador, some people support bitcoin while some people did not, that is just humans for you. Some people will support fiat even as fiat are decreasing in value all the time while the government are manipulating the price towards price devaluation but some people are just ignorant. What you are saying about bitcoin is right, more people will accept it, but there are many currencies that will be existing in the future, centralized currencies will also be among because people like what is from the government, even when it has disadvantages.