This is called "marginal utility of money" and is IMO the reason wealth redistribution is at minimum rational to the point that it doesn't disincentize needed g

This is called "marginal utility of money" and is IMO the reason wealth redistribution is at minimum rational to the point that it doesn't disincentize needed growth. In this light (and this is obviously a gross simplification that doesn't even begin to capture reality) the main disagreement across the spectrum from communists to anarcho-capitalists is really: where is that point? and how much growth is needed? AnCaps say any redistribution is too much, communists would like no inequality gap at all. Presumably the pareto value is in the middle somewhere and changes constantly based on charging preferences, technology, and a trillion other variables. This of course treats the whole issue in a very technocratic, whiggish way whereas the real disagreements between these groups is not like that at all.