Remember kids, nobody can "earn" a billion dollars. It's impossible for one man to work that hard. When a person becomes a billionaire, they did so by stealing from those below them. For every employee that stayed late for free to be a team player, for every hour of wage theft, for every cut made to the worker's pay or parks, that money went into the boss's pocket.
You don't become a billionaire but earning it, you do it by being a parasite