According to the DUmmies it is because the Teabagging cable companies and satellite providers shoved MesSNBC to the 3rd tier of channels you have to pay extra for.
Well, that crappy excuse ends for Comcast customers in Massachusetts (and maybe elsewhere) soon. The days of plugging a cable-ready set into live coax and getting basic cable are over. All cable now requires a converter, and all channel tiers are expanding.
The reason is simple -- and will certainly anger the primitives. Because they are to blame.
When one would sign up only for internet service, getting basic cable was a side effect. So, to induce the primitives to throw some money in for the nearly free TV they were getting, Comcast (and others) moved channels loved by primitives to one service tier higher.
It didn't work. The cheapass primitives continued to be cheapass primitives.
So now everybody needs a cable box.