What I'm interested in is the prevalent practices for licensing art within the tabletop games industry:
How is most art commissioned for tabletop games licensed to the creator of the tabletop game itself? For example, how would Wizards of the Coast treat an illustration created for Dungeons and Dragons? What about releasing art into public domain/Creative Commons licensing?
In short, what I'm interested in are answers that look at prior knowledge, industry insights, and legal concerns related to the licensing of external work for a tabletop game.