In this ongoing cryptocurrency game, Bitcoin is currently the Schelling point for the simple reason that it was the first currency of this kind and currently therefore the biggest. Other than that, there is no good reason to join Bitcoin over an unlimited number of copies. In fact, currently a few million people are using Bitcoin. If a decent part of the world’s economy would start using Bitcoin as a currency, this would mean an incredible shift of wealth towards the early adopters. This is highly unlikely because it requires adoption of those who are not favored in any way by this wealth shift. This would only happen with a complete lack of alternatives: only if traditional fiat money widely were in acute danger of collapse and no other, more favorable crypto currencies were in place.