If you're still having trouble extrapolating how this is an issue, consider how the narrative structure of television continued to evolve in response to our binge-watching habits. I'm not here to argue about whether or not we are in a "Golden Age of Television" right now, but the truth is, there are some pretty great shows out there right now. The expectations have been raised, as narratives have matured. Networks used to prefer sitcoms because they had a better chance of new viewers tuning in every week. But now, with fewer people relying on live broadcasts, it's changed the way that we interact with TV shows — with episode pacing, exposition, serialized story details, etc. — and those narrative structures will continue to change and evolve.
That is, unless Comcast starts to restrict your bandwidth. Then you only get about 70 hours of streaming a month (to say nothing of the data limitations on the millions of other things you do online). If that happens, then not only are you less inclined to catch up on Game of Thrones, but the writing team on Game of Thrones is less inclined to create quality programming that really grabs you because it's more financially viable for them to create formulaic programming instead, thereby returning television to the "Boob Tube" status of audio-visual brainwashing instead of a compelling narrative medium*.
Perhaps more importantly, if Comcast begins to limit streaming, then my fiance won't be able to listen to Law & Order: SVU every night in order to get to sleep. "How does Law & Order: SVU help her get to sleep," you ask, "when it's a procedural show that mostly consists of horrible, horrible acts of rape and violence against women? Doesn't that give her nightmares or something?" Look, man, I don't understand it either. But if it works for her, then it works me, and then everyone wins, because everyone gets to sleep, so everyone's happy.
DO YOU HEAR THAT, FCC?! MAINTAIN NET NEUTRALITY SO THAT I CAN SLEEP IN PEACE.
*Some folks would argue that binge-watching is in fact the greatest accomplishment of television brainwashing, and that we're even worse off now than we were before. They're probably right, and I'm probably so brainwashed at this point that I'm blindly spouting propaganda in their favor. Oh well.