The Shack used to be the major retail face for Dish. Now that they have their own B&M stores, they have less need to partner with Radio Shack.
In some ways I miss the B&M video store. With their big inventory, it was easy to find older movies that one hadn't seen in a while. Pick it up off the shefl, blow off the dust, and take it home. Most of the newer alternatives seem to focus mostly on new releases.