It’s not a bug that capitalism is based on greed, it’s a feature. It works (relatively speaking) because it leverages humanity’s shittyness.
Communism has failed to operate without corruption or authoritarianism, because it depends on people actually giving a shit about each other long term.
Thanks for the thought provoking reply!
My impression is that all systems fail long term and need to break down and be renewed after crisis. Once it becomes entrenched, I think odds are heavily against being able to try social systems.
Have you seen a system like you describe, where a structure to continue change and experimentation is built in? To me capitalism with strong controls seems the most stable and successful (assuming your benchmark is population qualify of life not just GDP), e.g. some European systems.