I disagree with your implicit assumption that automated access is equivalent to a person viewing the data. Scale changes the results. Technology is making things possible at scales and economies that were not viable before, and people are slow to adjust.
It's one thing to have police stationed at a bus stop, waiting for a suspect to emerge. It's another to network facial recognition cameras across a city or country and log the motions of the entire population.
It's one thing to greet people in a grocery store and offer coupons for your product. It's another to (as discussed a couple days ago) install Bluetooth beacons in a variety of stores, install trojan packages in popular phone apps, and track people moving through stores.
It's one thing to browse LinkedIn for a person's profile, read the bio of an interesting candidate, and email them. It's another to slurp up 2000 candidates and send an email to all of them.