Household income at the 90th percentile is about $250k per the US census. [1] And wealth disparities tend to be much larger yet still since a significant chunk of the $250k spending is going to go into things they have equity in like mortgage/low depreciation assets/etc, as opposed to food and rent. Especially in modern times where seemingly every industry is trying to figure out ways to charge rent while providing as little in return as possible.

Oligarchs have always been in their own class.

[1] - https://finance.yahoo.com/news/income-puts-top-10-earners-16...