I think you have to remember that every format will be more costly at the time of introduction compared to the time where they are the single mainstream format. Blu-ray prices will naturally lower as time goes by, and so will the eqiupment needed to play blu-ray's.
Also, on the gaming note. When a developer chooses to better utilize the blu-ray by including additional content in the game, this will (assuming the developer knows what they are doing and the extra content adds to the overall quality of the game) result in higher sales, leading to more profit (assuming the sales make up for the money invested in the development). Sony doesn't get any more or any less from a game with more content compared to one that does not have something extra.







