addressed the importance of reducing inequality for democracy to survive. Otherwise he felt that you would need to reduce democracy to control the population. No one would be dis-incentivized if they made 40 billion instead of 60 billion. There comes a point of marginal return for each dollar earned because you just can't spend or realize the utility of it all. If you want a stable society in which you can build a 40 billion dollar empire it's best that the gap not become too wide. That's the problem with privatizing basic necessities such as education, infrastructure and healthcare. They are regressive taxes on the poor but they aren't counted as taxation. However, there's no doubt they are a form of taxation because they are costs that are shifted from those who can easily afford them to those who can't even survive.
As I like to say, the Bell Curve doesn't go away just because you call the system Capitalism. Everyone can't be a billionaire in a system based on scarcity. Those who call the shots clearly understand this and try to propagandize it away by branding what they don't like as Communism or Socialism. That's just disingenuous bullshit.