billionaires are unproductive because they don't need the returns to capital their wealth generates, which means we get a gross misallocation at a macroeconomic

billionaires are unproductive because they don't need the returns to capital their wealth generates, which means we get a gross misallocation at a macroeconomic level. we simply don't need billionaires at all, and would be better served as a society to have 1000 millionaires in place of each billionaire, who could allocate essentially the same capital much more efficiently.