But most of those issues are because Linux doesn't have enough market share. No one brushes off Windows because they need to support Windows and they need to add CI/CD for Windows.

The combination issue is a real issue though that (as far as I know) is mostly solved with Flatpaks, or in case of games, by using the Steam Runtime.

Of course, it is a "chicken and egg" problem of "we don't want to support Linux because there aren't enough users using it" but "we don't want to use Linux because there aren't enough business supporting it".

Thankfully with improvements in Wine the need of having "native" Linux support is shrinking, but at the same time there is still a looooong way to go (like the issues I said before with Affinity).

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.