As I understand it, a successful product launch is a strong addition to a "promo packet". What we are seeing is the inevitable result of a system that prioritizes new products above all else. If google wanted to combat the stigma that they kill 3 out of every 4 products they launch, they could just start rewarding promo packets that demonstrate maintenance and growth. I still have Reader bookmarked as a reminder to not get to invested. Show people that they are committed to the longevity of their products and you might just get more early adopters for you next big launch.