Once again, if you think I’m defending capitalism, you’re deluded.
What’s “natural” is how we, as a species, have acted since the dawn of history, especially before organized agriculture, and that was as tribal/clan-based groups, which has persisted to this day. Even later, with the rise of kingdoms/nations, those large entities are simply extensions of the “tribe”/“clan”, although our basic nature causes frays and cracks at the edges, when we do so.
“Capitalism” is, in some form, probably inevitable for a very long time, since we really don’t know how to “do” an economy that doesn’t involve capital in some form at a large scale. At the tribal level, yes, “pure” communism works just fine both in theory and in actual example, throughout history to the present. But attempting to generalize the tribal level to governing an entire nation simply doesn’t work very well, as history (and sociology) also shows us.
Don’t agree? Fine. But please do explain how we’re going to run a national economy without money, the essential root of capitalism. Then, how you’re going to “govern” a country with zero centralized power (communism), or how you’re going to regulate UNregulated markets (no, the “magic hand of Adam Smith” is not sufficient), without generating a ruling mafia class (libertarianism) and creating a kleptocracy (see also this Google search re: Russia’s perfect example). Good luck; no one has managed, to this day.
It’s an old saw, but apropos: Just about everything Marx said about communism, he got wrong. Just about everything he said about capitalism, however, is spot-on.
Note: We also need to realize that capitalism IS NOT directly contradictory to any other governing “-ism” because, unlike the rest, it isn’t a form of government; rather, it’s purely an economic system.