If GitHub could guarantee that the code Copilot had ingested was only made with OSS licenses, then I don't see what the problem is.
But as far as I understand, GitHub trained Copilot on any public repository on GitHub, meaning even if it doesn't have a license specified (so the user publishing it still has the copyright to it), then I don't see how it can be OK.
But as far as I understand, GitHub trained Copilot on any public repository on GitHub, meaning even if it doesn't have a license specified (so the user publishing it still has the copyright to it), then I don't see how it can be OK.