Like Bono, who tours the world in private jets, transporting tons of equipment in tractor trailers so he can sing songs and make millions, lecturing the minions on their emissions.
It really is about the elitism.
Once you achieve a certain level of lifestyle, you can only marginally improve it by becoming richer.
However, by making others’ lifestyle significantly less, you increase the difference, and therefore make yourself more “special” than you were.
I believe this is a prime motivator for these elitists.