That's because the place to make inroads was elsewhere... in mobile, embedded, etc., which we don't count as "desktop" (though at one point, desktop was basical

That's because the place to make inroads was elsewhere... in mobile, embedded, etc., which we don't count as "desktop" (though at one point, desktop was basically anything with a GUI). You throw in Android phones, Chromebooks, browsers in embedded devices, etc., the picture looks quite different.