Is that really the thinking? I like all of the cheesy Irwin Allen Sci Fi shows but I don't like Star Trek. But I'm sure there are fans of Lost In Space who don't like Voyage for instance. Man from UNCLE fans wouldn't all necessarily buy GFU. Fans of Combat might not be fans of all of the other WWII dramas. And so on and so on. But by what reasoning does a studio assume one show will predict the success of another? Makes no sense. But then I guess that's what you get when decisions are made by people who have no idea about the relative popularity of a title.