Makes perfect sense to me.
For well of a decade Dish has been playing the cellular game with little to nothing to show for it up until the past few years. Now two real companies will be taking full advantage of what Charlie and co. could not do.
Dish Wireless was a failure, waste of time and resources and the spectrum will be put to much better use now that Dish Wireless and gone and is being decommissioned. Exactly 0 subscribers had access to Dish's DoD spectrum, in the next year or two well over 100 million people will have access to it, thanks to AT&T.