This is the really important part of the post: You got to ask yourself what is the difference between a game and a piece of media. This should be an easy answer, right? You play games, you don't play media. Playing is very different from reading, watching, listening, or browsing because while those are passive activities, playing is active. This is the distinction(and one hell of a distinction it is).
Every game is centered around being active participant even the ones which show you movies and make you temporarily passive. Opposed to movies which can never be active.