I want to see GB3 just as much as everyone else here, but there aren't enough people elsewhere. So you can't blame Bill Murray, you have to blame all the people who want something more. I'm sure that if Ghostbusters was as popular as Manga and Anime, and everyone wanted to see a third movie, Bill Murray would do it in a heartbeat. But right now, it would probably only hurt it, and that's what he's afraid of.