On the other side, Google doesn't always follow this rule and I wouldn't trust them much more to look after Twitter than Wall St.
Google has killed off (or left to rot, and then kill off) projects with huge user counts/business outlooks in the past... remember Google Reader and Google Code?
Both could have kicked Feedly's and Github's/SF's asses multiple times over with a bit of investment, and Google basically let them rot until the backend of Google's infrastructure changed too much to justify the needed adaptions on the projects.
I believe G+ had 300M+ users at the time, and G+ was still considered a failure. 1M is a rounding error by Google standards. They can get 1M users by releasing _anything_ that does _anything_ at this point.
Google has killed off (or left to rot, and then kill off) projects with huge user counts/business outlooks in the past... remember Google Reader and Google Code?
Both could have kicked Feedly's and Github's/SF's asses multiple times over with a bit of investment, and Google basically let them rot until the backend of Google's infrastructure changed too much to justify the needed adaptions on the projects.