Wow, I've read Swann's columns on and off for years. I'm surprised to read that he thinks they'll shut down AT&T TV within the next year.
It's clear to me that AT&T is more excited about HBO Max than AT&T TV but I see no reason why they would want to completely exit the MVPD business as long as they are a home broadband provider (and one that owns popular linear cable channels like CNN, TBS and TNT, no less).
Heck, we're seeing T-Mobile move in the opposite direction. As they start to ramp up their own home broadband business (using wireless 5G and 4G signals), they're planning to revamp and relaunch their own MVPD,
TVision, as an AT&T TV-like OTT service with a customized Android TV box and remote control. And it will be a long time, if ever, before T-Mobile has as many home broadband customers, for whom they can bundle in cable TV service, as AT&T has. And AT&T also has the benefits of being a content/channel owner, which T-Mo doesn't have. (Given all that, I'm not sure why T-Mo doesn't just strike a deal to resell Hulu with Live TV and/or YouTube TV.)
So I'm not buying the idea of an AT&T TV shutdown. If they sell or spin off DirecTV, which I do think is likely, then AT&T TV will essentially just be the next-gen replacement for Uverse TV (which already is no longer taking new customers). Who knows what it will mean, though, in terms of channel packages and pricing at AT&T TV, which currently closely resembles DirecTV and is based on the same channel carriage contracts.
I do think AT&T TV Now gets shut down at the point when HBO Max begins offering add-on live cable TV service, similar to Hulu. IIRC, the HBO Max unveiling back at the end of Oct. projected that would happen in 2021. (Or maybe that's when HBO Max is supposed to get an ad-supported tier. Or maybe both will happen in 2021.) Who knows, maybe it'll even get shut down before then. AT&T clearly doesn't care much about it given the lack of marketing.