A proof of work scarce digital store of value that no one controls would be a winner take all game. There will not be other proof of works with significant portions of global use. It is inevitable that it would become a way to escape being unbanked, then mild inflation protection, then used in cross boarder settlement, then used for sovereign individuals to subject other actors to natural law in a digital space. Right now the transition from unbanked to being used for escape from just mild inflation is just starting.