Earlier quoted context omitted.
longevity? uh... no. capitalism is very young in human society. for clarity, feudalism lasted twice as long as capitalism has currently existed. and while competition has dominated the scientific and cultural narrative for a while, that's not the exclusive interpretation, or even necessarily the best or correct one.
I have to ask what do you mean by capitalism then? Was the blacksmith selling the products of his labor to people in the community not capitalism? What exactly do you mean by capitalism?
if we are going to make a distinction between feudalism and capitalism, surely we can similarly make a distinction between capitalism and X, instead of simply defining capitalism uselessly as "free markets" or "human nature." it's inclusive of the institutions which uphold these relations.