It's more than just that, MS aren't really doing anything to make it truly interesting to people.
Not only have I never seen a single person using a windows phone, I’ve never even heard anyone talking about it except for tech sites like this. And it's usually in a negative light.
They seem to think emulating some of what Apple does will magically make their products successful. But there's a base misunderstanding going on.
Copying some of the tactics and strategies that Apple does will not give them success. What they fail to understand is what makes Apple successful is they're able to cohesively develop a fantastic product from top to bottom that people want and are interested in.
MS have yet to still figure that part out.
It's so bizarre, MS do a lot of the things that Apple has done like locking out other web browsers and competing services. Yet these things are done because Apple can get away with them, not because people want those being locked out. (they don't)
This is why Android is a success that's going to eventually end up eating 90%+ of the phone market. Google are doing to Apple and MS, what MS did to Apple in the 90's. They're commoditising smart phones.