> You could have someone who is solidly in the investment class and only works three hours a year, but during those three hours they tell their pet executives to put the capital into energy storage tech and new housing construction and do a lot of good in the world.
If they're making skilled capital-allocation decisions that most people couldn't, that's work. If they're being charitable in the allocation of their ill-gotten gains, that doesn't make them any less ill-gotten.
Rentiers inherently make their money in a zero-sum way; it's perhaps not the only way to be zero-sum, but it is a major one.