The future Bitcoin price will be increaseing because next few years there are many countries allow to use BTC and adopt the cryptocurrency for earn money . That time is not so far where money and Bitcoin use as same world currency value . Someone can tell my thoughts are over ambitious but when it will happen then believe .
I dont really agree that Bitcoin is likely to dominate in the same way USD has done since ww2. Even at the inception of that agreement it was seen as quite possibly flawed to rely on one standard even then it was in a set ratio to gold so l apparently universal. I dont think BTC can be a universal perfect standard, we will see a peak in the current excessive debt backing to currency exchanged, many things will change and BTC will be part of that in not being fractional reserve but also a great variety of currency used not just one imo,