Beautifully detailed article! Well done, Ed!
From the way the mobile device OS landscape is looking, I guess the next thing that comes to mind is: Look out, Symbian!
While Symbian enthusiasts always have (mainly valid) points to make regarding the competition from WM but seem to miss the fact that WM is, so far, not aimed at the lower to middle end of the mobile phone market in which there are quite a few Symbian devices. Where I expect Symbian to lose ground is the high-end 'mobile office' device (Nokia's 9xxx series and Sony Ericsson's P9xx).
Other (assumably) more knowlegdeable people have stated the same thing (Symbian will lose to WM -or mobile Linux). See this article at msmobiles:
http://msmobiles.com/news.php/4231.html
It'll be a long hard 'fight' mainly because of the deep pockets and big market share of Nokia (and S-E to a lesser degree) who have major vested interest in holding on to Symbian but in the end WM will prevail as the OS of choice for both OEMs and users.
Aide