OK. Saying "Well, we might want to sell a DVD one day" sounds a bit weak.
Why's that? The Germans are already doing it:
I know that, but that hardly changes the core goal of WP from being to build an online encyclopedia. EN.wp is hugely successful without doing that. I doubt it is in most editors' minds as the point of the exercise. They just want to improve a fish article with a drawing of that fish (etc). Ensuring maximum reuse rights for everyone else is not at the top of their priority list.
Brianna
-- "Mathematicians do it with Nobel's wife."