I am not sure inequalities are that high in the US. They certainly are if you compare the absolute extremes of the distribution (Musk to a homeless drug addict), but beyond 2% percentile each side they are not that high.
There was an interesting talk on this topic [1]. What they argue is that the statistics used in the US to measure income inequality are misleading as they don’t account for taxes and benefits. The gap is greatly reduced if you do.
In any case, poverty is usually the issue, not inequality.
I don’t have a reference handy but there was also recently sn analysis that concluded immigration significantly skews the numbers when comparing inequity to EU nations. The US has significant immigration on the bottom end and also on the top end.