Linux has won on phones (Android) and on the server side. I don't think Windows Server is seriously used for anything but Exchange/AD these days, outside of hosting specialized or legacy apps.
Windows also comprehensively lost the "exclusivity" moat. Most of popular apps are now cross-platform, because they need to run on Android/iOS/macOS. So desktop Linux is often an easy addition: Slack, Discord, all the messengers, Zoom, various IDEs, etc.
So Linux indeed won to a large extent. Just not in the way people expected it.
Windows also comprehensively lost the "exclusivity" moat. Most of popular apps are now cross-platform, because they need to run on Android/iOS/macOS. So desktop Linux is often an easy addition: Slack, Discord, all the messengers, Zoom, various IDEs, etc.
So Linux indeed won to a large extent. Just not in the way people expected it.