Earlier quoted context omitted.
FWIW, it used to be law. Tax rate on the top-1% of earners in the US was much, much, MUCH higher until the recent four or so decades.
At this rate I'd be happy if they simply paid as much as everyone else (percentage wise). Rather, that they didn't find as many legal tax avoidance methods. I don't know if they should be taxed more than the 99%, I'll let someone who knows economics tell me what is best.
An economist will tell you that a handful of taxes are inherently helpful and getting money is a nice bonus (externalities taxes, some amount of LVT). If you need more money than what you can get through those (and you do) then the least harmful tax is a wealth tax, but those are unpopular and difficult to administrate. Income-based taxes are less efficient but still okay. Sales taxes aren't very good at all.