I don't know... I used to think this, then I talked to 'regular' people (well, as 'regular' as people are that I meet). I know, I know, 'anecdata', but views I tend to get are either split between "Facebook is the worst, can't wait for it to get shut down" vs "It's creepy what all these companies do, but what can I do?".
> "It's creepy what all these companies do, but what can I do?"
That goes for everything for those with position of power.
"It's creepy what all these policemen do, but what can I do?"
"It's creepy what all these politicians do, but what can I do?" etc etc
In case of FaceBook, whey know what to do. So "Regular people don't care much..." is the correct conclusion as as far as I can see.
My anecdata is that I met plenty of people who said "Facebook is the best", then they take a picture of you to upload it there regardless of what anyone thinks (would even tag it by the name). And I can't see how they would change their mind unless it is by public shaming - the same way that smoking has been reduces in many places.