The problem is that greed & sociopathy are, fundamentally, rewarded by every single system that humans have ever devised, and the single and only safeguard is a properly educated and logical (sane) citizenry who understand that, a community is interdependent, Rome wasn’t built in a day, civilization is a product of the collective and, are willing to take action to defend that collective.
The rub is that the wealthy/powerful will always try to attain more power/wealth, so unregulated, centralized, capitalism/socialism is guaranteed to result in the most immoral, unethical, sociopathic, criminals being the most successful. All they have to do is succeed once, while we have to defend for infinity.