This graph compares the desktop OS market share split between Microsoft (Windows), Apple (OS X, iOS, macOS), Google (Chrome OS, Android), and what’s being reported as “Linux”. Notably, it removes the “Other”, “Playstation”, and “Unknown” values, and re-normalises the rest to 100 (percent). Made by downloading the data from StatCounter

Windows only share of the above.

Apple, Google, Linux shares of the above.

If you guys want to check the numbers and my maths here’s the spreadsheet.