I think as expected it would be more used on a wild scale purpose according to what you say but that does not mean it would be a substitute for some other currency. what's happening still happens, let's wait for the time to show us the probability.
it is possible that it will be used as the main currency in the future but no one can prove that or no one can be sure that it will happen.
Its own probability is to be a substitute for paper money. It is one that can be a perfect innovation for the new technologies. We cannot predict the future, but we can see what will goin to be in the future. A lot of inventions and impossible innovation were built, and think twice again that bitcoin can be a virtual money and can substitute the main paper money