

Where the hell are you getting your numbers? Everything I see says that Steam made a record 16 billion in 2025 while PC gaming as a whole made 43 billion. That would put Steam somewhere around 27% of the PC market.
https://www.gamesindustry.biz/gamesindustrybiz-presents-the-year-in-numbers-2025-year-in-review
https://www.eteknix.com/steams-revenue-surpasses-16-billion-in-2025-new-estimate-shows/




The graph specifically calls out the Oculus Rift as the start of what it considers the VR segment.
I would consider things like the Virtual Boy as VR to some extent as well, but I do see the logic as to why they only started the line with the Oculus. Before that it probably wouldn’t even show up as the money there was a drop in the bucket of a tenth of a percent of anything else, but it’s also widely considered that the Oculus and the Vive were the first really viable commercial VR headsets that started the VR game niche/genre. Before that, VR could probably be considered as niche as eye and head tracking hardware for sim games, and I don’t think that I’ve ever heard somebody mention those when talking about money in the games industry. Or even mentioned them in general outside of conversations like this. I don’t think most people even know that that kind of stuff even exists.