Google forced Microsoft to remove Youtube and other apps. Also Microsoft kept 're-inventing' the phone OS multiple times requiring app authors to keep rewriting

Google forced Microsoft to remove Youtube and other apps. Also Microsoft kept 're-inventing' the phone OS multiple times requiring app authors to keep rewriting the app to new API's. A lot of patent fees paid to Apple and Google for every phone sold. Windows Phone was really good and it had millions of fans. It would probably do well in today's duopoly market if relaunched but MS has lost interest in phones presently.