What they should do is take over Directv and convert them over to Dish.
Do some reading. Dish did attempt to buy DirecTV. The DOJ said hell no. It was after the DOJ said to pound sand that Rupe came in and bought controlling interest in DirecTV. Which he later sold to Liberty media.
The failed merger cost Charlie and company $600 Mil.
I really don't think Dish would try another merger knowing that the chance of the DOJ changing their mind is slim to none.