It's not my assessment, I just happen to agree with it. You disagreed with it yet came to the same conclusion (Microsoft's dominance over desktop). I simply miss the logical step in that process.

PS. Also, there are plenty of "digital ecosystems" for us to play with, even today. Billions over billions of ad hoc, embedded, portable, desktop, mainframe and all the other platforms in between. Thankfully some unification now exists (where it matters).