I'm sure it's more complex than what I imagine, but I always had the impression that Amazon was all about content, which is why they supposedly "take a hit" on their hardware. It seems like they would want their content on as many platforms as possible.
Again, probably more complex than what I care to think about. I'm cool without Prime and like others have mentioned, AirPlay works just fine.
Again, probably more complex than what I care to think about. I'm cool without Prime and like others have mentioned, AirPlay works just fine.