Although I love Inbox, it had no chance of being a $100 million dollar business. It would have been lucky to clear $10 million, even ignoring the fact that nearly all of its revenue would be cannibalized from gmail itself.
The odd part is that they developed a successful blueprint for how to beat their existing Gmail product and are apparently walking away from it. Anecdotal, but I don't know anyone who I introduced Inbox to that does not prefer it to standard Gmail. I wish they would focus their consolidation efforts on their awful messaging mess and leave Inbox alone.
