Because of research and development costs, once they have covered that the price should gradually decrease. It's like Nintendo who spent more money on reseacsh and development on the Wii than the entire US spent on education that year.
But Blu-ray will always be more expensive because companies who use the technology have to pay royalties to Sony. As far as I'm consernd blu-ray is white elephant.
Don't tell me you believe that. The price difference is there to artificially create appeal for the product. If its double the price, it has to be something special, no? Well it costs virtually the same amount of money to churn a BD as a DVD, once you have the press and the production line going the material is the same, the disk is pressed and costs the same. The non-savvy consumer thinks he is getting something special. Well it ain't so.
Yes the resolution is better. However the acting, plot and storyline are still the same. A bad or mediocre (most of Hollywood) movie will not suddenly become good on BluRay. Also 40 inches is not 6x the magic but roughly 2x the perceived magic and believe me after 30 minuts you forget you're watching High Definition.