I share your outlook on the future of society with regards to its relationship of the mass with technology and privacy. If anything the last decade has shown us, it's that the average person will readily sacrifice freedom and privacy for security and convenience at the earliest opportunity and almost entirely without question or protest.
With that being said, I've some feeling that the "consent" FB and Google have from its users to essentially bulk collect and analyze their data may largely stem from ignorance as to what is being collected and how it's being used i.e. the relationship between the content one produces in Gmail and the ads that same person receives.
That's a tightly coupled, straightforward relationship too. I've no doubt that the average person has zero idea what is involved when Google touts that it can now confidently track an ad being served/viewed online to an in-store, in-person purchase offline.
Then again, with the Snowden leaks and similar and the absolutely apathetic (at best) reaction from the public at large, maybe convenience merely trumps all and will forever more.