Addendum: there is one relevant thing. If Canonical actually agree that they're violating the license(s) and are just doing it anyway, then there's probably so

Addendum: there is one relevant thing. If Canonical actually agree that they're violating the license(s) and are just doing it anyway, then there's probably some warranted discussion. But even that is more an issue for the community than one for IP law (unless Canonical is doing it precisely to force a definitive license interpretation. I see no evidence of this). If it's just a case that one set of people think it's a violation and Canonical disagreeing, then it's doesn't become an issue until someone with standing decides to make it one.