> you can build a statistical model that targets your advertisement not to a user, but a set of criteria: "Males between the ages of 35 and 40 living in a mid-sized town in Texas who liked curling and Star Wars Episode I, but has never traveled to Australia". This is still perfectly possible.
Prediction: It won't be after the government is done with a new set of regulations, at least for election purposes. I continue to believe this is about the ability to wield political influence, not privacy. The privacy issues have been well known for years, and there's very little evidence of public concern over the privacy, other than newspaper article after newspaper article claiming there is, each one "coincidentally" making reference to Donald Trump, as if he was somehow personally responsible for this debacle, and almost no stories on the Obama campaign who did largely the same thing on a much grander scale.
If someone knows of any convincing independent public polls, with published questions (with the right questions, you can get whatever "answer" you want to produce) that shows that there are in fact widespread public privacy concerns, I'd love to read them. Until then, I'm going to continue to believe this is about the power to influence the public in the political sphere, and predict that the Facebook platform is going to be stripped of that power.