Probably the fact that these societies arose from violent revolutions doomed them. Revolutions tend to lead to authoritarian governments, because if you can tak

Probably the fact that these societies arose from violent revolutions doomed them. Revolutions tend to lead to authoritarian governments, because if you can take over the whole country with your army, you don't really need democracy to legitimize you. I could easily cite Chile, Guatemala, Nicaragua, EL Salvador, Argentina, Bolivia, Paraguay, and countless other 20th century totalitarian regimes as instances where "capitalist experiments were doomed by greed and sociopathy." Very easily, given that these regimes were backed by American capitalist business interests. But realistically? When you're strong enough and ruthless enough to take over an entire country, you're probably more interested in power than in ideology, one way or another.