Nothing to study. A common scenario when a mega corp acquires an incredibly successful startup and then lets it die. Happens more often than not. This is why I chuckle when I see an acquisition and the founders claim "Nothing is changing. We are not going anywhere" . There may be exceptions but the moment a hugely successful company like heroku gets acquired, you know it's most likely game over. To their credit, they survived 15 years after acquisition but barely.