And they are in the process of getting rid of the full streaming version of it (ATT TV Now). A full streaming service isn't profitable for the cable companies. The price points are too low, the customers can leave whenever they want, etc. AT&T TV (not ATT TV Now) requires you to purchase a set top box and sign a two year contract. It's a stupid and dated model but ATT is convinced this is the only way to make money. It takes 26 months for to
break even on a new customer to the service. Their only hope is to get you to bundle with internet and/or phone and get you to stay on contract for as long as possible.
I say all this because I was a lead strategist for AT&T Tv. It's a shytty product and I hated everything from the name to the pricing structure. But big corporate AT&T wasn't tryna hear anything from people like me.
Here's an article on the ATT TV/Tv Now differences:
AT&T TV vs. AT&T TV Now: What's the Difference? - Clark Howard
I can't speak on HBO Max tho, I wasn't on that team and I haven't even checked it out yet.