Possibly, but just saying learn C# so you can program for Windows Phone is the wrong selling point. It should be learn C# so you can develop native-quality apps

Possibly, but just saying learn C# so you can program for Windows Phone is the wrong selling point. It should be learn C# so you can develop native-quality apps for all mobile platforms. Microsoft should completely embrace Xamarin. That would solve the OSX problem as well, as developers could use whatever OS and IDE they prefer.