The obvious answer is they can support anything they care about directly. The relationship a selfish multi-billionaire has with the government is ideally that s

The obvious answer is they can support anything they care about directly. The relationship a selfish multi-billionaire has with the government is ideally that said government takes a huge amount of money from them, then spends it much less efficiently than they would on things Mr. billions doesn't think are the highest priority targets to fund.