http://www.cartoonbrew.com/business/pixars-ed-catmull-emerge...
Also, he never covered why Cars was so awful. (or Cars 2) which I believe both came out before the book? Maybe you disagree they were bad but rottentomatoes and metacritic has them near the bottom of the list along with The Good Dinosaur, Brave, and Monsters University.
I'd love to know what he thinks changed.
What I liked most about that book was how much he acknowledged luck. Examples: Luck they didn't get sold/disbanded before Jobs bought them from Lucas. Luck that Jobs was willing to blow 70 million on them as a computer company before they switched to being an animation company. And he acknowledges lots of other luck.