Earlier quoted context omitted.
The person earning $50m a year is profiting on the labor of hundreds of thousands of people. Rent seeking on their labor and skills, relying 100,000x more on the infrastructure that made them rich. No one makes $50m a year in a vacuum, they do so by utilizing the economy they live in and rely on.
If that's the way you see it, you are also free to do so. Labor is a market and the laws of supply and demand are at play just like any other market. Go start a company and hire some people. This is Y Combinator's Hacker News after all. The world needs more founders.
We don’t live in a fantasy world simulation on a frictionless plane where anyone can be a billionaire if they just pull up their bootstraps.