So, given that Apple users are almost fanatically loyal, and that Mac sales in the US are getting close to 10%, OS X should overtake Windows here sometime in the not-too-distant future.

[I'm bookmarking this comment for reference in a few years.]

But todays Neilsen stats show WinMo/WP7 nearing 9% market share, so does that mean Windows will overtake iOS (phones) in the not-too-distant future??

The problem is that there are often competing nearing 10%s. Audi may be nearing 10% of luxury cars http://www.autospies.com/news/The-BIG-Luxury-Three-Audi-BMW-... , I don't think we'll see them taking a 60% market share.

But... are there any committed WP7 fanatics? Really? not anywhere near 10%, I'd bet.