This is rediculous and dripping with silicon valley "we're workers too" attitude. Employees, especially tech employees, have the luxury of being able to go elsewhere if they don't feel they're being adequately compensated. There is no comparison between helping poor african groups or donating to education and giving your employees, who agreed their wages were fair, a raise. Even if you don't like it, it's ultimately his money. This isn't the alms that could have kept the poor coders from having to endure hardahip. It's difficult to comprehend the mentality that could see the workers as the victims in this situation. They were paid the wages they were promised, is the argument that somehow he's a bad person for amassing more than them?
They are not being 'deprived' of anything. They agreed to exchange their labor for a fixed price, and they received that price. There was no 'deprivation' anywhere in the system.
If you're withholding the fruits of labor from workers because "too bad, bro; you signed the paper" then you're not really trying to be kind to anyone. You just want to be rich and appear to be kind.
How much of the worker output actually is his personal accomplishment, and how much is synergy effect coming from the fact that the employer gave them tools, materials, support of other workers, standard operating procedures, know-how? Therefore not all "fruits of labor" actually belong to a worker.