The USA plutonomy
The reason why there's so much concentrated wealth is no one's willing to fight the perils of injustice. USA runs on legal positivism a rule of law of "tendency" rather than making you a better individual. People tend to just want to stay at home go to a 9-5 factory job rather than stand up to injustice and make money helping people with their own business or socialize because we're all worried about legal issues rather than a "hero in waiting" mixed with the heros journey to declare victory against injustice.
Natural laws don't work because most people don't know morals but because only the minority knows the perils of injustice, because only the minority have ventured forth into the unknown to face the dragon and know what true justice is. And that wisdom of justice is passed down via the bill of rights and other rights and laws.
The rich in USA society know this to be the case, and let the others drown in "tendency" like following a character like trump or Hitler in "tendency" to follow the leader, to obey the leader. Keeping them poor and inevitably peril like the Nazis in WW2 cause justice finds a way.