Though Apple has only just added HBO Go to the lineup of its Apple TV set-top box, the reason for the long delay come from various factors outside Apple's control rather, according to various reports put together by AppleInsider. HBO itself -- along with Apple -- were focused on getting the network's content onto iPhones and iPads as a priority, with the Apple TV "app" becoming HBO's first-ever all in-house software project. On top of that, affiliates such as Comcast are often hesitate to allow subscribers access to the mobile versions.