I seriously doubt you actually believe this, at least in an equal way. The code to Windows XP is available on the 'net, but I can't just go and compile that and start giving out copies without serious legal repercussions.
Copilot is "copyright for me but not for thee" and it's bullshit.
It generates what a intern code monkey would generate after reading a few stack overflow posts and a few github repos.
Again, its copyright for them, but no protections for us.
I mean, it might. That's the whole concern. It's scraping random bits of code from all over the place.
1 month ago, HN front page https://news.ycombinator.com/item?id=31458635
"Q: Why is nothing from the Windows XP source code leak added?
A: Even though Microsoft has only taken down a few Windows modifications, they will most definitely take Windows XP Delta Edition down if there is a reference to the source code inside it. The Windows XP source code is illegal to download, fork, and redistribute, so nothing from it will ever be added."