HBO Looks Beyond 'Game Of Thrones,' Maybe Back To A Prequel
Keeping subscribers on board means more than another hit, even one as globally dazzling as "Game of Thrones" proved to be. But it's where HBO can start to protect its brand and position, observers say, an effort both demanded and compounded by an increasingly congested small-screen landscape and the expectations of the channel's corporate owner since 2016, AT&T.



