This is a great move. There is no money in being an Android vendor except if you're Samsung and are totally vertically integrated. With Windows Phone, Nokia and Microsoft at least have some hope of carving out a profitable stake in the market. Anecdotally, I'm very impressed with some of the new Lumias. I got a 620 to replace my stolen iPhone, and for $200 unlocked its phenomenal phone. The build quality makes a flag…
Agreed re: Samsung. With this new acquisition, Microsoft now has the ability to control the entire mobile phone experience -- something Apple has had huge success doing for years now. They'll have a high-quality platform to promote their app store and create an interesting ecosystem. This'll also create a distinct image in consumer's minds of what the Microsoft Phone is, similar to what we imagine when we think of th…
Another issue is Microsoft does not have profitable consumer services other than Xbox. Even Microsoft can integrate a lot of its services with Windows Phone, it is a big money sink until Microsoft can make profit on search, maps, outlook.com, skydrive, etc. They have tried for over a decade by now.
In the end, I really like to see 3-way competition between Apple, Google, Microsoft.