If you live in a country where free to air TV is commonplace, then the only issue that makes it tough to arrange, is the installation of a rooftop home antenna. Which is why it makes complete sense for Dish and its set top sister company EchoStar, which also houses Sling Media, to go about the task of promoting cord cutting with its new AirTV. Dish is really taking on the task of eating its own children here. Dish is already in the business of installing satellite dishes and a rooftop antenna is a similar exercise – although increasingly indoor antennas can work in some parts of some countries, depending on signal strength. This may give Dish an edge where…