So, before there was Netflix, there were dedicated digital cable channels that allowed cable subscribers to watch various TV shows and movies for free, usually with some sort of ad-supported structure. Right now, if you're like most cable users in the country, you're probably thinking, "Oh yeah, that's right. There are on-demand channels that I can access from my cable box." The problem is you never actually go there to watch anything. And here are some numbers to prove that.