You are correct in many ways, but let's not forgot, a lot of people simply don't comprehend Windows 10 and its depth/reach.
Windows 10 already has 150+ million installs, Windows 10 is the "UWP" - Universal Windows Platform. With a single development methodology to target Phone, Xbox One, Windows 10 on Tablets and Windows 10 on desktop.
I think a lot of people are writing off "mobile" on the concepts set forth by Apple & Android without thinking "Universal" where win10 already has a sizeable market share that it seems *absurd* companies aren't trying to monopolize especially considering how easy it is to enter this market. in Windows 10 UWP an app isn't "mobile" its "connected" and it works across a huge and growing platform base.