DTV's hardware does look increasingly dated, especially with regard to its lack of streaming apps compared to current offerings from DISH, Comcast Xfinity, etc. I guess it's possible the new company invests money to bring out a new generation of DTV receivers with popular apps but that seems unlikely. Because if a customer wants streaming apps, it means he has broadband. And if he has broadband, well, they already have a solution for you in the form of AT&T TV (or whatever the new DirecTV company renames it to), which has a custom box with voice remote, Google Assistant built in, and access to tons of Android TV apps. And pretty much the same channel packages as DTV, but cheaper.
Only way I could see them bringing apps to DTV is if they made the AT&T TV Android TV box work as a client receiver in conjunction with a DBS server like the HS17 (i.e. Genie 2). In fact, language in the original user manual submitted to the FCC with the AT&T TV box a few years ago suggested that that may have been the plan.