Steam hardware survey puts 4090 at 1.16% and 7900xtx at 0.54%. That means if we look at only the 4090s and 7900xtx-s then just between the two of them the 7900xtx makes up about a third of the cards. So yeah, you are a minority of a minority.
As for this number jargon. I’m not exactly sure what you’re trying to prove here but I’m sure you’re comparing an overclocked card to a stock card and if you’re saying it’s matching the 4090D then you’re not actually matching the 4090. 4090D is weaker than 4090, depending on the benchmark it ranges between 5% weaker to 30% weaker. If you were trying to prove that AMD cards can be as good as Nvidia cards then you’ve proven that even with overclocking the top of the line AMD card can’t beat a stock top of the line Nvidia card.
That has been gone over by Marx over 150 years ago. I’m not going to go over everything Marx said about capitalism, he wrote an entire book called Das Kapital about it. Here’s a summary that does a pretty good job at getting Marx’s ideas across. You can skip the first 2-3 chapters as the main criticism of capitalism starts around chapter 4. But some things refer back to the previous chapters so you might want to watch them if some parts of Marx’s ideas aren’t very clear.
As for you points, I’ll do a short summary:
The things you’ve brought up aren’t necessarily the basis of capitalism. They’re the basis of capitalism only if you want them to be the basis of capitalism.