HBOMAX project inexperience caused to "Failing to plan syndrom" exposed the project to unpredictable high risks and problems according to ingternal emails. Now they are trying to figure out how to solve the "HBOMAX problem" Access from direct competitors.
https://www.fool.com/investing/2020/10/09/att-cant-afford-to-keep-hbo-max-off-roku-and-fire/