Interactive art is a step beyond traditional art. The artist doesn't lose control over their artwork by having someone else interact with it if that was their intention for the artwork. One could argue that the consumer is being manipilated by the art just as much as the art is being manipulated by the consumer.
Video games follow this same principal. The path is all laid out for the player to follow; the choices are not as endless as they may seem, even for the most complex of games. The choices are programmed into the games by the game developers; that means that it was the developer's intention for the player to make one of those choices. Whatever path the player decides to take will lead them through the developer's artwork just as intended.