> Excuse me for my nativity but can't they just buy back a trillion more stocks or something, keeping the stock price where it is no matter what?
Stock buybacks are net neutral wrt the company's value. They're just one of the ways to return money to stock holders. It's not a magical perpetuum mobile kind of thing.
> I don't think something can really hurt your income when you have that much money.
Of course many things can hurt your income no matter how much money you have. The only entities whose income can't be hurt are the ones who don't have any!
Stock buybacks are net neutral wrt the company's value. They're just one of the ways to return money to stock holders. It's not a magical perpetuum mobile kind of thing.
> I don't think something can really hurt your income when you have that much money.
Of course many things can hurt your income no matter how much money you have. The only entities whose income can't be hurt are the ones who don't have any!