I recently tried sling.tv and it was terrible. Why would I want to pay to spend 1/3 of the time watching ads? (not to mention how _bad_ almost all of the programming is)
I would pay a _lot_ for a content subscription that had a history channel that actually had history programming... a science channel that actually had science programming ... all without ads or gimmicks.
Mythbusters guys are great but half the content is either commercials or cliffhangers trying to get you to stay past the commercials.
There is a vast untapped market of educated people who want to purchase content that's targeted beyond the means of a clever 8th grader. Instead we get news for gossip freaks, reality tv shows, and what little advanced interesting content there is is targeted way too young.