The (mis-attributed to Lenin and Stalin) quote "The capitalists will sell us the rope with which we will hang them." is quite big in this. A little humility and a lot more tax-paying could save the trillionaire classes from the tumbrils but they lack the emotional intelligence to see it and as long as they make a few thousand millionaires below them they have useful idiots to decry any changes.
On the plus side, workers are in short supply. The future needs more people who can do things other than thinkers, and robots (bless their hearts) don't spend money as consumers so the other side of the billionaire equation demands new people to come into spending class: this means Africa, Asia and South America levelling up.