Windows userland compatibility is outstanding. I can run most 30 year old Windows applications on Windows 11 without a problem. This makes it easy for a commercial vendor to support their applications on Windows.

The same is not at all true on Linux.

Right now at work, I’ve got a bunch of commercial apps built for RHEL9 for which I’m chasing vendors for new builds that work on RHEL10, for a variety of reasons. Dependencies like libXScrnSaver have simply been removed, and so apps linked against that library no longer work.