Horace Dediu goes over Microsoft’s previous strategic mobile partners. It’s embarrassing how utterly catastrophic the results have been with all of them, but it’s not surprising if you look at Windows Mobile: it’s a lousy, outdated OS and always has been. I think the key difference in today’s new Nokia/Microsoft announcement is Windows Phone 7: most people I know who’ve used it prefer it over Android. Great User Experiences win customers, and whilst I have no personal experience with WP7, it looks to me like a proper contender—unlike Windows Mobile (or Symbian).
Should be interesting to see how this will play out in the market. Looks like quite a few Nokia employees aren’t too pleased with it, though.