The point he was supporting was "no matter how rich you are, there's only so much time you can get by trading money for it," in which context $500k/year isn't o

The point he was supporting was "no matter how rich you are, there's only so much time you can get by trading money for it," in which context $500k/year isn't out of place--especially, as you noticed, with Warren Buffett as the example.