Let's see, which should I pick for this particular occasion of encountering this fallacy... we've got the US housing crisis, US war crimes and torture, NSA spying... hmm so many choices.
He made his money within a society. Money is not necessarily adding value (increasing the pie), it is also just shifted around. If his income were distributed more equally between many others who would instead pay taxes, the amount of taxes would be far, far higher.
He'd be in jail if he broke the law.