Earlier quoted context omitted.
I will speculate there is a completely different mechanism for inequality than taxation policies. Let’s call it crony capitalism and specifically originating within the financial system. Federal reserve policies and bailouts and socialized losses with privatized gains are what cause inequities, imho. I can give a few specific examples that might help. https://en.wikipedia.org/wiki/Maiden_Lane_Transactions https://www…
Of course The Fed is a generator of inequality, but if taxes were set properly, it could be counterbalanced. We can see this in European countries with much lower rates of inequality because of high taxes on excessive wealth and income. They also have central banks printing money at insanely low interest rates (or even negative rates)… until recently… perhaps they have raised their rates in tandem with the US.
I can’t find the paper done on US data but this is one discussing similar idea:
https://warwick.ac.uk/fac/soc/economics/research/centres/cag...