I missed the attainment of the victory condition. Linus won.
I guess I wasn't paying that much attention.
Exhibit A: "If Microsoft ever does applications for Linux it means I've won." -- Linus Torvalds, according to Needle, David (1998-10-01).
(Why Intel and Netscape bought into Linux. CNN.com. as retrieved from Wikiquote on 2016-03-08.)
Exhibit B: Microsoft Corporate apps for Android on Google Play
The condition was met at least by 2013
(future-proofing that link by noting that the Wayback Machine has it too web.archive.org/web/20140401163743/http://www.cnet.com/products/office-mobile-android/)
Now, a case can be made that a self-declared victory doesn't mean that much. Or that the original context was "desktop linux" and so Microsoft Android apps don't count. Maybe I'll address those later. For now, though, I think setting what seems to be a lofty goal and then hitting it after a lot of work seems to be worth something.