I worked there during this time, and this pretty much confirms what everyone feared when the merger was announced. Part of me wants to read this book, but I know it will make me really mad.
Just a little anecdote, we had a meeting shortly after where Frank Pierce told us that major changes would basically happen over Morhaime’s dead body. So when he left (and Pierce also) it was clear that it was over.
I ran into a guy from high school and it turns out he worked for Microsoft back in the Windows Mobile days. He said that changing even a single button on a submenu would take six months of meetings, and if it involved other departments they would actively sabotage any progress due to the way MS internally made departments compete, so you could basically forget it. He said they literally backdoored software so they could sidestep other departments to get features in.
I think about that a lot.