Well, I am not going to worry about it until it actually happens which could be a few years anyway. I have been switching back and forth for well over a decade between Dish and Directv to take advantage of promotional pricing and find they have the same channels with very few exceptions.
Currently with Dish due to the fact that Directv does not carry some specific sports programming since ATT took over. I doubt Dish has any future plans of going out of the sat tv business, and they are so much more RV friendly than Directv has ever been, can easily get local channels wherever we go through Dish chat on my smart phone.