I made this point before, but I think I need to make it again: are we actually discussing whether or not this is ok and what we should do about it?
We're wikipedia! We're the people that look at the culture of ownership and lawsuits and say "No! Free content can be as good as non-free!" We're supposed to stand for something profound. The policies could have been created so that every contributor licenses his contributions to the Wikimedia Foundation to do with what they wish and it would probably not have hurt wikipedia one bit (it certainly works well for YouTube). But we didn't! Because we're not those kind of people, that's not what we believe!
Seriously, are we really discussing this? There are times when I read this list and I just can't believe what some people are saying.
Wikipedia is released under the GDFL and not released to the public domain for a reason. If we aren't willing to enforce the terms of the GDFL, we should just release it to the public domain. We don't do that because people like to be credited for their work and very few people would contribute if people could just do whatever they like with it.