[jeffbee]

Google Docs was acquired, so I don't think so. You might be right about Calendar, because there is nothing in the world that a Googler or anyone else hates more than Oracle Calendar.

My overarching view on Google's evolution is that their real product is dirt-cheap computing facilities, and their products are often just a way to exploit that capacity. Part of Gmail's genesis was an abundance of underutilized hard drives. YouTube was acquired because they already had the networking in place to operate it. Inbox Smart Reply was a way to use a novel and cheap ML inference device to launch a feature that nobody else could afford. In all these cases the infrastructure existed first and the products emerged to fill them.