bitcoin today is a global currency or a global asset that says otherwise is shod that is the same as saying that gold is not global bitcoin is also a reserve of value is also limited i also have to get it out of a mine but virtual it is difficult to obtain or mine it takes time and work is not that you say I am going to create a bitcoin out of nothing has to have a computer mining machines electricity internet and work all day and the other way is to invest money and market it so it is not easy the degree of difficulty is what makes bitcoin is maintained because it can not be manipulated