The marginal utility of money is a real thing, but it applies to purchase of life basics, like goods, services, and security.
The marginal utility of money for power and influence in our societies seems to start a few orders of magnitude above the upper middle class, and so far doesn't seem to bend down very much as money increases.
The marginal utility of money for power and influence in our societies seems to start a few orders of magnitude above the upper middle class, and so far doesn't seem to bend down very much as money increases.