the removal of PS2 backward compatibility and other components isn't "dramatically reducing Sony's cost of manufacturing" on Sony's behemoth console
the handicapping of the PS3 was part of an effort to "encourage buyers of the entry-level PlayStation 3 to purchase more games designed specifically for the new system."
having better PS3 software won't work. Nor would working more closely with third parties to help them ship their PS3 ports of Xbox 360 titles day and date, feature for feature.
You couldn't accomplish exactly the same by actually making some more exclusive games which will have release dates closer to the present day?