This is complete and utter bullshit. I'm sick of people conflating basic human needs and monetary systems.
Who said anything about money? I said trade. If Ook the caveman gives Thagg the caveman some fish in exchange for a bearskin -- as opposed to clubbing Thagg over the head and taking the bearskin -- that's trade, just as making a lean-to out of branches is engineering, adding 2+2 is mathematics, and Ook and Thagg grunting at each other is communication. Everything else is just an increase in sophistication and scale. And when Chief Krunk starts deciding whether or not Ook and Thagg can exchange fish and bearskins, that's regulation, and (assuming they can't simply kill him) Krunk's goodwill is now valuable to Ook and Thagg. Krunk's probably going to be getting some "donations" of trout and furs.