I think the logical outcome is rather than Google avoiding ethically dubious, but highly profitable behavior, they will simply run a tighter ship of classification, isolation, and control. Companies and governments have become pretty decent at fingering over-eager leakers. And that's before you even get into who we're talking about. Google may rival even the NSA at this point in terms of the reach and breadth of their digital surveillance and data collection/categorization capacities, at least in the Western world. They're going to learn from and work against their leaks, not give up their 'ambitions'.

Consider the NSA for an example of what's possible. They were doing what Snowden outed for years. And not a peep. Actually that's not true. There were plenty of 'peeps' but they were brutally silenced. See, for instance, Thomas Drake [1]. He tried to obey the law relying on whistleblower laws and an assumption of good will from other government organizations. He got destroyed and lost everything he had, and was unable to effectively get his message out on top of it all. That's another topic though...

[1] - https://en.wikipedia.org/wiki/Thomas_A._Drake

As we seen with the Google Plus bug that exposed user data even if Google would be a nice company even they can have a bug and expose your data, this makes me think that the best solution as a user is minimize the data that is collected about you and as a company to discard any data that you don't need and anonymize the data you have to keep and can be anonymized.

Maybe not intentionally but problem is that often such data can be partially or fully de-anonymized using various statistical analysis techniques.

#1 Reason: no one can monetize that data better than Google

#2 They'd be helping their rivals with such data

#3 Sharing might kill the golden goose (bad press etc)

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