But it probably also knows that for every one pissed off Satellite Guy, there are 10 or 100 subs who never say a word, and are generally happy, when compared with Dish's offerings vis a vis cable.
More likely Dish realizes that for every sub complaining there are 10 to 100 subs out there that have the same complaint and aren't calling, emailing, or posting here. (Maybe they're just leaving.)