It's an arms race. As corporate income tax receipts dry up countries change their policies. Very wealthy, naturally international companies not only have more r

It's an arms race. As corporate income tax receipts dry up countries change their policies. Very wealthy, naturally international companies not only have more resources to compete, they also have the ability to play hard ball and leave the country entirely (see tax inversions of pharmaceutical companies from America to Europe) bringing not just the lost corporate tax, but the income tax on salaries as well.