Ultimately any economical and Political system will struggle with this. Capitalism can work if you have a taxation and redistribution of the wealth. Otherwise all wealth eventually congregates like mass in a black hole. Simultaneously you can have a system that might have fairer basic ideals but ends up just as corrupt. See the various attempts at communism.
The tricky part is the vigilance. Imagine a Musk raising his arm for a hearty ‘sieg heil’ in 1945-80. Now he got away with it. Generations forget. Safeguards get erroded away over time as the greedy goblins hammer away at them like woodpeckers.
The loaded gun is always there. The dangerous men always try to get to it. We gotta guard it 24/7. Not an easy task.
Just got back from asking them. They said they like cash moneys and don’t like blasting themselves.