That is explicitly the point. Taxing income is stupid; the richest people don't necessarily have incomes at all. To the extent that inequality is problematic, i

That is explicitly the point. Taxing income is stupid; the richest people don't necessarily have incomes at all. To the extent that inequality is problematic, it's from inequality of wealth. In the U.S. you "can't" tax wealth without a Constitutional amendment, maybe you were getting at that. If we could administer a low wealth tax of ~3-5% or something, productive people like Bezos would continue to amass wealth, but you wouldn't have unproductive rentier family dynasties as over time their wealth would be taxed away. edit: I should add that Saudi and Oman already effectively tax wealth, since they have no income tax and Sharia requires donating a percentage of your net wealth to the community.