A problem I see with this is DTV canceling new satellites and the current fleet has a finite lifespan. I'm not up on current in orbit spares, but if DTV needs a replacement satellite it takes a year or more to build and launch one. And at tremendous cost.
My opinion is ATT will connect most of the country in the next 5yrs via a combination of DSL over copper, fiber and 5G and eventually pull the plug on satellite delivery. That's simply my opinion but based on some things I've seen while working there and picking up bits and pieces from employees. I think ATT likes the Netflix model with no satellites, no warehouses full of receivers, no installers, etc, and they can cut a lot of costs and retain a majority of the customer base.
I tend to agree with you I don't think At&t sees Satellite as a long term way of delivery. But just how long is the question and are they willing to accelerate ending that use for the merger.