"Capitalism is just human nature."

If it's just human nature, then why do we need a militarized police force to enforce order? Having workers go to a workplace, do labor, and then send the profits to some far away entity that probably isn't even there is actually very far from human nature. It's something that necessarily requires the implied threat of violence to maintain. Same with tenants and landlords. No one would pay rent if it wasn't for the police, who will use violence to throw you out otherwise.

It also frustrates me how that argument just waves away the incredibly complex and actually extremely arbitrary legal structure of capitalism. What about human nature contains limited liability for artificial legal entities controlled by shareholders? "Ah yes, here's the part of the human genome that expresses preferred and common stock; here's the part that contains the innate human desire for quarterly earnings calls."

edit: typo