That being said if you're not actually going to use your account you might want to at least consider giving it to someone who would put it to more active use. Just a thought.
Just how much of the "real world" law you're alluding to by using the term "ownership" do you suppose applies to Twitter handles? (or Gmail addresses, or Facebook pages, or even domain names?)
I just don't quite see how a username is 'owed' to other people who would use it more, either.
Seeing how easily GoDaddy handed over the domain, it seems one can't even own a domain properly, and that is supposed to be a lot closer to an "ownership" right than Twitter handles.
We could look towards email and dns, though, as examples of a more fair distribution of namespace resources.
Organizations would do well to investigate what their options are to retain control over their namespace, lest it fall whim to a mishap such as this instance.