You're right, and I upvoted you, but one issue is that unless people buy AMD cards anyway, they'll never have the research funds to ever match, much less beat Nvidia in the future. All things being equal (and they usually are for my needs) I tend to buy AMD over Nvidia to keep them in the race, so that GPU's don't turn into a monopoly. As it is, the duopoly we have now (excluding Intel, which I'm not sure will continue making consumer GPU's in the long run) isn't great for consumers right now.
The only reason AMD GPU's are even as good as they are now is due to the research money they got from Ryzen taking the fight to Intel.