Earlier quoted context omitted.
It's easy to structure taxes such that the UBI is extremely meaningful—it helps the people at the low end a lot, the people in the middle a little, and the people at the upper end end up paying more. But guess what? They weren't using that money anyway (except to make more money for themselves).
The people at the top don't have much money (as a percentage of their holdings), they have "wealth", where wealth means productive enterprises like e.g. toilet paper factories. The people at the bottom work in toilet paper factories and are given money which they use to buy toilet paper from the people at the top, and thus there is a productive equilibrium between the wiping masses and the owner of the means of wipin…
This (and its inverse, "when the people at the top make more money, they invest it so it does good for the whole economy") is the foundation of trickle-down economics.
It's been empirically proven not to work over the past 40 years.