Again, please quit the cheap sophistry.
> the kind of behavior that goes against my idealized version of what society should be
Are you listening to yourself? You sound like a college sophomore who is sure has a solution to all of humanity's problems...
> turns people into selfish venal assholes
... and can only assign blame on others.
I can bet you nourish some well-developed fantasies about what you would do if you were given enough power over any "less centralized society", and they are a lot more about imposing your view over everyone than ensuring your small community can prosper and be happy.