in a fiat world yes. in a world using money (not the fake fiat we have now), everyone else gets wealthier at the same time. that's what was taken from us. 'late stage capitalism' etc is just mindless division to distract people that are getting robbed.
i don't understand what you mean. capitalism existed before fiat currency. carnegie, morgan, rockefeller etc all made their fortunes by owning the means of production long before the gold standard was abolished in the united states. we were able to share their wealth via heavy progressive taxation, not because we didn't use fiat currency.