I think you hit upon the gist of it which is that users don't care. The same could be said about users' general complacency about the tracking/storage Google does.
Users are generally right, it doesn't matter in most cases. No harm is being done... yet.
The general trend is toward services that do not make privacy optional and that require the users to accept a narrower range data collection and advertisement policies in order to use the service.
In time (maybe in 5-10 years) getting on the internet will require accepting terms that basically give up lots of privacy and anonymity. (My other prediction is that we'll see the return of interruption ads that cannot be skipped for nearly all content, or every 7 or 8 minutes during a typical internet usage setting).
The above is why investors are paying so much money for shares of Google and Facebook. Both are a combination of internet gatekeeper and data collector. Both are awaiting the right moment so they can enter the "last mile" business. In the meantime, the fact that users don't care is just gravy.
Incidentally, the most relevant consequence of this in today's world is that both firms are happy to do whatever powerful governments want. Facebook and Google are destined to become the next Halliburton and Ratheon as cyber warfare and terrorism loom large as threats to security and government finds itself horribly data-poor compared to private firms.
Users don't care yet. I think this will be looked on as a blip some time in the future. Once enough of the this generation has enough embarrassing or undesired information shared there will be a shift. They don't value the privacy yet because they haven't learned the value of it yet. I say give them time. Eventually they will learn that value and then the Facebook and company will have will see people wanting to control it.