They could use their money and influence to lobby the government in a positive direction, such as making sure taxes go toward social programs instead of killing brown people, and then simultaneously help fund that by filing their taxes fairly and paying their intended share rather than do this arcane skullfuckery to pay as little as possible. A great next step would be to lobby for reforming tax code so other, less charitably minded billionaires start doing the same whether they want to or not.
only a forcibly expropriated billionaire is a good billionaire