The real reason for no BC on the 40GB PS3?

GamerNode: PlayStation 3 Video Game News - The real reason for no BC on the 40GB PS3?: "The Wall Street Journal has a new story up about the price drop of the 80GB PS3 and the upcoming 40GB model. Contained in the article, however, is yet another gem from Sony's camp -- more specifically, president and chief executive officer of Sony's U.S. games division Jack Tretton. According to the WSJ: 'Mr. Tretton conceded that removing that capability [backwards compatibility], along with a few other features, isn't dramatically reducing Sony's cost of manufacturing the console but will instead encourage buyers of the entry-level PlayStation 3 to purchase more games designed specifically for the new system.'"