My bread and butter is email systems, and I’m still waiting to see the mythical open-source Exchange killer.
Whoa! Whoa!
I totally agree with you. But that’s server apps, not OS!
In my mind MS has a few Aces in the hole
1. Exchange.
2. Active Directory.
3. Gaming Platform.
While you are 100% correct, it doesn’t speak to the consumer OS issue. By extension it may go to the server OS issue, but even that not directly.