Microsoft could have leveraged the popularity of Xbox to market their phone as a mobile gaming system and I think that would have been hugely popular.
XBox Phone would have sign in for an XBox account... Windows Phone would tether to an exposed AD/SSO login system for business use.
Apple sold that many iPhones a year back then. Of course now, Apple sells that many in a bad quarter.
Thanks to a lawyer, we know now that Google has made $31 billion in revenue and $22 billion in profit from its Android operating system....
That’s over Android’s entire existence.
But if the $31 billion total is correct, Google has earned less money from Android throughout its existence than Apple earned from iPhone sales in fourth quarter of 2015, when it brought in $32.2 billion in revenue.
https://www.theverge.com/2016/1/21/10810834/android-generate...
But to answer your question 11.5 billion last year
https://www.forbes.com/sites/chuckjones/2018/01/06/apples-ap...
Even if Windows Phone had Nintendo level third place success, what would it have gained them? No company besides Apple and to a lesser extent Samsung make any real money on phones. I doubt the phone division even makes any really money, Samsung makes most of its mobile money from the parts it sells.
Google doesn’t even make that much from Android. They make some from Google Play Services and advertising but they also pay Apple billions a year to be the default search engine for iOS.