Speaking of Linux, this OS family's slice of the Steam Software Survey pie sits at 3.20%, with a not all that impressive 0.15% overall gain compared to the previous month.
Not impressive when you (deliberately?) use the absolute increase over one single month to minimize how fast the Linux share appears to be growing. If you look at its increase over approximately the last 5 years, there's a significant and strong growth trend. November 2020 to November 2025, that's ((3.2% - 0.9%) / 0.9%), which equals a 255% increase over that time frame. Not only is that solid growth, but the graph shows that this growth seems to be accelerating. Source for the numbers: https://www.gamingonlinux.com/steam-tracker/