An interesting question. But I have to stress that this is framed from the capitalist viewpoint. If the total money in the world is a fixed number
Is it fixed though*? and that is before we get into the contemplations of R0
Between things being dug out of the ground, things refined into far more useful things, things produced by processes, money being printed, whatever we are counting the likes of bitcoin as, people inventing values for stocks and shares, the more fun implications of futures contracts, similarly the fun of future work done, random groups of people creating their own "local" currencies, general barter and whatever else it is anything but fixed.