That is not really the case if you have highspeed internet. ATT “gives” subscribers free OAN through DirecTV NOW with many of their plans.
That is one of the reasons why we cut the cable years ago and get DirecTV NOW over the internet... they have OAN. Anyone with a HD Amazon Fire TV box (about $40 most of the time) or a ROKU can watch OAN on their TV. You can also get OAN using their App without DirecTV NOW.
How do I locate OAN with Roku?