The bigger problem to me seems like the growing income disparities between the upper middle class and everyone else. When my family in Oregon complains about housing prices shooting up, I don’t think it’s Jeff Bezos that’s to blame, except insofar as he’s paying tons of money to knowledge workers who buy up housing in places like Bend. The stuff middle class people care about—skyrocketing costs of education, housing, health care, etc., seem mostly to be supply and demand problems where the upper middle class is both helping limit supply and inflating prices through demand.
The really bizarre thing is that the top 10% doesn’t realize that it’s interests are highly aligned with the top 1% or top 0.01%. Globalism, intense focus on education, etc., make the top 0.01% richer but also accelerates the divergence between the top 10% and the bottom 90%.