Microsoft makes several hundred million to billion on Android royalties alone. They did that with either actual lawsuits or the threat of them. I don't remember what it was in the start but do know they suck a fortune out of Android vendors (esp Samsung) while they did everything they could to put it out of business with Windows Phone. Nothing contributed, but billions taken via patent claims.

https://www.forbes.com/sites/ewanspence/2015/11/01/microsoft...