Comment by rossy

For what it's worth, it's not just Microsoft who care. You're not allowed[1] to contribute to Wine if you've ever seen the leaked Windows source code. I think it's weird that they consider your mind to be "tainted" forever, but whatever. I guess they want to be cautious.

(You're also not allowed to contribute to the Wine CRT if you've ever seen the CRT source that's legally distributed with the Windows SDK.)

[1]: https://wiki.winehq.org/Developer_FAQ#Who_can.27t_contribute...