Actually, just one, the desktop.
In virtually every other market, Linux is either dominating or has a firm share.
So maybe MS dominates the withering on prem data center world. But that’s smaller than cloud nowadays.
For smartphones, Linux-based Android has the largest market share. It is linux dominated. For less smart phones, there are Linux based operating systems like KaiOS.
https://en.wikipedia.org/wiki/Android_(operating_system)
https://en.wikipedia.org/wiki/KaiOS
Linux based OSs having 87% market share in india: https://www.androidauthority.com/india-kaios-market-share-88...
Global 74% market share for Android: https://gs.statcounter.com/os-market-share/mobile/worldwide
> gaming like Xbox and playstation
Yes, I think most deployed devices don't use Linux, and I'm not aware of any major linux using gaming console, but it's not unheard of, e.g. SNES classic mini. Also, from what I saw, Linux has a good foothold for game streaming offerings, but it's a new market and not yet established that it'll last.
> smart TVs
smart TVs are almost exclusively on Linux!
https://www.statista.com/statistics/257778/number-of-smart-t...
WebOS, Tizen, Android TV, Roku OS, Firefox OS, Amazon Fire TV, all uses Linux.
Google can replace Linux with Zirkon tomorrow and 99% of Android apps won't even notice.
Just like TVs, who cares what OS a smart TV is running.