What if Google was an intelligence agency?

Google's unofficial motto is "Don't be evil", but what if Google started being evil and used all of its collected information as an intelligence agency would? What if intelligence professionals had access to Google's resources and data ? What would it mean for the users? And can this be prevented somehow? (it’s also rather ironic that many people now see NSA as a big evil organization, but Google collects even more)

But really, how would a company like Google compare to an intelligence agency like the NSA? How would it be able to gain access to confidential information and go beyond OSINT (Open Source Intelligence)? Does Google even have the resources, data and technical capabilities to harvest all-sources intelligence like a major intelligence service would?

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What if Google was an intelligence agency?