For the same reason that they are billionaires in the first place. They want the profit, but don't want to pay the production cost. In this case they want the

For the same reason that they are billionaires in the first place. They want the profit, but don't want to pay the production cost. In this case they want the government to pay, which is ironic considering their core business's margins in both the case of Musk and Bezos are centered around tax avoidance.