Earlier quoted context omitted.
Github does not own the Arctic Vault, there is an independent company behind it [1]. Given its purpose as a long-term archival, it is likely that exemptions to the copyright for (library) archival can apply here. [EDIT: This is probably not true, see the reply for the reason.] [1] https://www.piql.com/awa/
> Github does not own the Arctic Vault, there is an independent company behind it Github are the ones doing all the archiving. So, in essence, they do own that. Piql are just the ones providing the storage: it's a commercial for-profit entity employed for backup by another commercial for-profit entity.
By the way, my initial statement that it may qualify for copyright exemptions turned out to be false for a different reason. They only apply when the library and/or archive in question is open to the public, and the Github Arctic Vault isn't. Thus I think it's actually a Github's generic usage grant in the ToS [2] that allows for the Vault. The Copilot is, of course, very different to anything described in the ToS.
[1] https://arcticworldarchive.org/contribute/
[2] https://docs.github.com/en/github/site-policy/github-terms-o...