Tom Kalbfus wrote:A role playing game is not a board game though, it is designed so that new adventures can be created,
Product lines do not go on forever, though. Yes, WotC could continue with support for all the D&D settings, but they would then spread themselves thin like what happened with TSR. Where RPGs differ, though, is that their fans are the ones generating new content. I've seen a blog or two out there with some GW stuff, which is cool.
I think, though, that the reason we're having this discussion is because we care for Gamma World. WotC nailed this version, and when we only got 3 products, we got vocal. Woot!
Oh, and if you want to support Gamma World further, I'd recommend submitting an article to the D&D Nexus.