Why doesn't sprint have an ap store??

[Sim-X]

Why doesn't sprint have an ap store set up? I'm not really the biggest fan of the iphone but the ap store does look pretty cool. I looked some of them up online and a lot of them are very practical. A lot of them are also reasonably priced either being free or under a few bucks. I really like my phone (htc touch pro - sprint) but this being my first windows mobile phone I guess I don't know where the best place to load up applications is. Why wouldn't sprint set up an ap store? I know I would glady pay a couple bucks for an ap and have it download instatly without having to search the web or hook up my sync cable.