Might just be a personal perspective, but the majority of Nvidia cards that I've seen purchased in my community (Not in germany tho) are second hand - most aren't buying the 50 series due to their horrible pricing. People are buying AMD cards new though due to their good value proposition.

A couple generations back, Nvidia was the obvious choice and AMD just couldn't compete. Nvidia had real-time ray tracing, AMD didn't, Nvidia's hardware video encoding was great, AMD's sucked, Nvidia had CUDA, AMD pretty much didn't, Nvidia had their DLSS frame gen technology, AMD either didn't or it wasn't very good.

Well, in most of those places, AMD has caught up, and they offer more VRAM in their lower tier products, at better prices.

Oh, and I've been hearing through the grapevine that Nvidia is dropping the ball with drivers. That used to be AMD's bag, but AMD's drivers are more solid these days.

Oh, and Nvidia's weird new power socket keeps catching on fire. I've got a 7900GRE that attaches with two good old 8-pin PCIe connectors that offer a distinct lack of combustion.

Nvidia are selling many multiples of this volume to AI providers.

Gaming means essentially nothing in the big picture. (Outside of maybe prestige or similar)