Earlier quoted context omitted.
The argument against income tax is that it penalizes earners, and rewards not working. Sure, that is a reductionist argument but so was yours. The real argument against taxing wealth is that it isn't really feasible; you'd just encourage banking in other countries or buying up a lot of land. I also agree that capital gains being taxed at a lower rate is insane and makes sense only when you realize that's how politici…
Assuming wealth is earned, why would you want to tax it? It already was taxed when the individual was working. Inherited wealth is another matter.
Certainly it's not easy getting outsize returns reliably, but the idea that the return is earned in a way that scales with the amount invested sounds very dubious to me.