Nvidia being the odd one out
Right, I get that but also :

(Source Steam Hardware & Software Survey: January 2026 )
Entire top10, then for marketshare I don't count NVIDIA I count the rest :
AMD : ~15%
Intel : ~6%
I'm too lazy to guesstimate when it's below 0.5% but you get the idea, at least 75% is NVIDIA.
So "odd" yes but still a big deal in terms of market share for gamers.
To be clear though I am NOT advocating for NVIDIA (especially with all their AI BS) just showing how dominating they are in that segment.