Google does not sell data, at least not in any form other than anonymized and aggregated, and not very much even that way. Google makes money from using your data itself (to target ads to you), not from selling it to others.
I believe you are naive, and buying or regurgitating the plausible denial that has been crafted by Google. Even if Google truly is that innocent in intent, they have been negligent in securing that data so that it can't be stolen from them, even if they themselves aren't selling it. My oldest brother is an engineering VP at Google. There has been some serious kool-aid drinking there and in silicon valley over the last 10 years. And it's not so much that I believe he was misinformed, but rather, secretly informed, and doing a very good job of towing the public line which was a conspiracy to keep the public disinformed about the real state of security.
FWIW, I work for Google, on crypto security stuff, and Google does have a strong interest in proper encryption, because it's the right thing to do. It allows people to control their data. With respect to Google's business, Google would like you to choose to provide your data because you think it's a good trade for Google's services, but wants you to have the ability to make the choice not to provide your data. To anyone, if that's what you want.
Again, this is the naive line. Look at my epic saga over the past year complaining about GoogleFiber's terms of service that first "prohibited any kind of server" and now merely prohibit any kind of "commercial server". This is a conspiracy by Google, the NSA, and others, to keep the kinds of tools it would be necessary for people to secure their data at home - *as if it were their 'papers' (per 4th ammendment) - out of the marketplace. Call me a kook all you want, but the idea that chilling the market for commercial home server software (open source and otherwise), is consistent with what network neutrality was designed for... I mean really. You seriously believe you're employers line? Oh, that's right, enjoy your nice fat paychecks twice a month, and don't dare 'bite the hand that feeds'. Good luck to you brother.