I think asking what's "fair" is the wrong question. We should ask what is effective at creating the most utility. I believe the marginal utility of money is rou

I think asking what's "fair" is the wrong question. We should ask what is effective at creating the most utility. I believe the marginal utility of money is roughly logarithmic, and thus taking money from the rich and giving it to the poor creates a lot of utility. However, this must also be balanced with the economic incentives that (potential) inequality drives, which leads to a lot of utility creation. The intuition I take out of this, is that letting people be billionaires is a complete waste of resources, because plenty of people would still aspire to wealth even if the richest person in the world had a fraction of that.