What kinds of things are today's wealthy elites reading?

Inequality has been growing steadily in the West since the 80's and it feels today like we are getting into a bifurcated society with a very rich elite, a large working class and fewer and fewer people in between. This makes me think of the Victorian and Edwardian period in Britain when class differences and tastes were very pronounced.

It's got me wondering - what are the literary tastes of today's elites? Does anyone here have any insights? I'm wondering if they are really any different from us or if they are reading the same set of Amazon bestsellers?

Edit: Thank you for the responses, some interesting ones in here. As a note, I made a mistake using the word 'elite' in my question. I was really just thinking of wealthy people in general and should have chosen some less charged term.