These figures from AdDuplex, which runs an ad network for Windows Phone, surprised me. The company studies its stats for a random day in November, the 30th, and reports that 71% of the Windows Phone devices contacting its servers were from Nokia. The Lumia 710 leads with 24%, followed by Lumia 800 at 18%, and the Lumia 900 at 7%.
The obvious conclusion is that Nokia dominates the Windows Phone market. Bad news for HTC, which seems to be making a real effort with its 8X release (the 20th most popular device according to the stats).
Dominating the market may sound good for Nokia, but unfortunately the entire market is relatively small. The risk for the platform is that it becomes in effect a Nokia-only OS with all the other OEMs focused on Android.