Why does the middle class bother them? Basically they want a system of a few ruling, ultra wealthy elites and then a poor slave class.
These people are already so rich that they can have any luxury in the world. Why does the middle class bother them so much?
Something must happen to people when they have so much money they can buy whatever they want. It probably gets boring. Buying another $50 million mansion feels like nothing to them.
At that point they probably start craving more, and then seek power and control over other people.