I thought about it a lot, the problem is the content owners/creators. What good is HBO GO/MAX GO etc when the very first thing you must do is sign in to your cable or satellite provider to verify you pay the requisite extortion each month before you can watch a darn thing? 
Give me the option to purchase a direct feed either monthly or for a set block of hours or whatever and I'd be all over it. DIRECTLY. I don't want anything to do with Cable or Satellite! Until this happens I don't see much point of having these companion apps on the Apple TV.
In addition, the 8GB is a problem. I think they need 16GB minimum (8 for buffer and 8 for apps/data) before any serious work can be done.
Just my opinions, I realize not all share my view.
Give me the option to purchase a direct feed either monthly or for a set block of hours or whatever and I'd be all over it. DIRECTLY. I don't want anything to do with Cable or Satellite! Until this happens I don't see much point of having these companion apps on the Apple TV.
In addition, the 8GB is a problem. I think they need 16GB minimum (8 for buffer and 8 for apps/data) before any serious work can be done.
Just my opinions, I realize not all share my view.
TV is generally an immobile iDevice. It's not like an iPhone or iPad. No need to load up a bunch of apps on it's local storage as it is unlikely to be going out of reach of the home network and/or iCloud. Thus, all apps could be stored on the home computer's (running iTunes) hard drive(s) and then streamed over on demand (just like movies, TV shows, etc).