It seems like you're perfectly content for Googappazon to turn around and voluntarily
sell "your" data to governments.
Given that it's really their data about you, they don't even need to disclose this in the TOS. The best you could hope for is for companies to loudly prevent themselves in their contracts. Of course they could end up going through commercial third parties, or any other plausibly justifiable loophole when they get serious about increasing earnings. Even if they wholeheartedly break your contract and you provably find out, what was your consideration actually worth - a few dollars? You'd be in an even weaker position to show damages than you are now with the NSA.
The ability to consent/decline is indeed a powerful distinction between corporations and government - I believe our world would be much better if every association were voluntary and we could opt out of things we found harmful. But juxtaposing governments/corporations and arguing against one by wholesale endorsing of the other, especially for something as slippery as data, is a Faustian bargain.