While you are technically correct (the best kind of correct), this was kind of a brain-fart on my part and not really important to the point.
The point is that net worth includes the assumption of future earnings in the valuation. GDP is just one year's production.
Bill gates is orders of magnitude less wealthy than Ukraine, for example, even though his net worth is similar to Ukraine's GDP.
That's a terrible argument for why the amount of money Bill Gates has is not absurd.
(It is indeed a terrible argument for the point I'm not making).
In feudalism a single person is the entire state. His wealth isn't comparable, disregarding the extra rights that are conferred from literally being the law of the land as a monarch.
No, that's not true. That's not at all true.
Economically speaking, the US is not a "moderately sized country". It is the richest country in the world.
There are several moderately sized countries with lower GDP than Bill Gates net worth.