TV companies can’t just be TV companies any more. Comcast, Charter, Time Warner Cable, AT&T and Verizon — each of those companies compete with Dish Network’s TV service but also operate their own internet and, in the case of AT&T and Verizon, wireless services. They don’t sell TV; they sell data and in bundles.
Source: Why Dish and T-Mobile U.S. Need Each Other | Digital – Advertising Age