I dunno. Just use a different license then? You can't have free software and then limit what people can do with it

And also don’t tip your waiters because that just helps the owner /s.

I work in a Windows-dependent company, and would very much like to see all MS-products thrown out. Withholding features is ignorant and will make everyone’s lives miserable. Users won’t see it as a problem with Microsoft, they might not see it as a problem at all, they will just quietly suffer.

A slightly better path is to guide users to standardized, open applications on Windows. Then, an admin might have an easier time eventually pulling the cord without breaking too many workflows.

The open source world is littered with all kinds of specialized licenses that came about because a developer once said "Here is my source code. Do anything you like with it! ... wait! Except for that!".

I don't know if there is, but I wouldn't be surprised if there is a license available that restricts you from porting the code to MS Windows or any other proprietary OS.