1: https://www.newsweek.com/americas-12-richest-men-worth-combi...
It's the upper middle class that fills educational institutions, prevents the construction of new property, hogs most of the old property and in general has impacted the upward mobility of the lower classes. Musk has a lot of issues, but he's not really getting in the way of people getting richer themselves.
That said, they do get to exercise infinitely more control and power than a bunch of old people who own non-voting shares and real property that's only valuable at the whim and pleasure of the local regulators.