Could Canonical do that, realistically? Canonical's primary goal is to produce Ubuntu distributions. Given that, even if Canonical were to try and collect their trademarks into one, three or nine packages, _their_ distribution will not break when there's a bug. And bugs do happen.

IMO, the best that Canonical can _realistically_ do is to provide a list of trademarks and to not obfuscate trademarks. No funny escaping just to evade grep. Doing more would be nice, but anyone who forks has to search-and-replace anyway.