Capitalism sets up rules based on practicality and repeated interactions between people, which means that they actually make sense to follow even if you are purely selfish. In a system where the rules are based on empathy or ideology, the psychopath will have ZERO desire to follow the rules if they won’t get caught, but because interacting peacefully in trade with people actually pays off they get incentivized not to just do whatever they might impulsively want.
Capitalism sets up rules based on practicality and repeated interactions between people, which means that they actually make sense to follow even if you are purely selfish. In a system where the rules are based on empathy or ideology, the psychopath will have ZERO desire to follow the rules if they won’t get caught, but because interacting peacefully in trade with people actually pays off they get incentivized not to just do whatever they might impulsively want.