> But if the problem is discovered...

The default shouldn't be "you can violate people's licenses until you notice or get caught". Sure, in practice it probably won't cause anyone legal trouble: it would be really hard for, say, the author of some BSD-licensed code to prove that a user of Copilot actually caused them monetary damages by not providing attribution.

But this isn't really a world I want to live in; we shouldn't treat other people's work with such entitlement. Copilot should be able to trace the provenance of a suggestion it makes, and notify the author of their licensing obligations.

If that's not possible, then Copilot should not exist.