Nokia made the right decision here.
Having them hop on the Android train would put them in direct competition with the likes of Samsung and Sony... Those companies make their own OLED screens and processors and such and have sinergies with other tech aspects. Dollar for dollar and feature for feature, Nokia can't directly compete with them as all they do is make phones. Nokia has always been unique in its approach and this allows them to do this. Not many people have seen/used this Windows Phone 7 OS yet and while it has some bugs to fix, it is extremely intuitive and is pretty much mass market ready.
Whats amazing is the level of aliance that the companies will share -
Microsoft's Bing and adCenter will provide search and ad services across Nokia devices, while Nokia will look to innovate "on top of the platform" with things like its traditional strength in imaging. Ovi Maps will be a core part of Microsoft's mapping services and will be integrated with Bing, while Nokia's content store will be integrated into (read: assimilated by) Microsoft's Marketplace. Xbox Live and Office will also, as is to be expected, feature on these brave new Microkia handsets.
