The top 0.1% make an infinite amount of money... in the sense that above a certain level, more income makes no difference because there's only so much you can r

The top 0.1% make an infinite amount of money... in the sense that above a certain level, more income makes no difference because there's only so much you can really spend, so x+1=x, ie. x is infinite. But is that a problem, really? Is it a problem if 0.1% of society have absolutely no lack of money whatsoever? It sounds rather small to me, particularly since most of the money is a valuation of someone's job (or some other productive resource). Taking away the money is also taking away that someone's job.