EC-: They can't compete with YouTube, and Sessler made up a lot of that show's identity (I don't like him, but that's besides the point, and I am in the minority anyway).
I don't think TV is a dying medium as some people like to say, but I do see it scaling back over the next decade or so to only the broadest interest ranges (sports, comedy reruns, standbys like COPS, etc.). When it comes to more specialized interests, even those as large as gaming and tech, it's much preferable to the target audience to receive their content a la carte on the internet.
TV is not a dying medium but the format in the US is ultimately doomed. Less and less people are willing to consume in the format TV wants to foist off on people, as TV gets more desperate for cash, they actually intensify the problem by throwing up more ads, pop-overs, and generally annoying shit, thus alienating even more of the audience that they want to keep.
TV is not the best medium for a lot of the content that used to be delivered via TV, a lot of the content that always would have preferred (yes, I'm anthropomorphizing here) another medium has since moved or been so much more successful in their new home(s) that the stuff that remains on TV is hardly worth talking about.
WITH THAT SAID: Television is still a good format for a lot of things, SmartTVs, DVRs, and OnDemand services have made it even better than it was in the past. I think as we watch the old guard move out of being in charge of said medium (because new mediums don't typically have an "old guard", though the money-men are often old) we'll see the change that makes TV a lot better and a revitalizes the types of content that we'll access through it.
Though by the time that happens your average TV purchase may have the latest consoles already embedded via a plug and play interface or some other shit and be nearly unrecognizable as distinctly a "TV". It should be interesting.