People only care about privacy when it directly affects them.
If we unveiled how the insurance industry is using / mining / buying social data to hike the rates on people they deem as higher risk, you would have a national debate front and center.
As long as it doesn't directly affect them, most people don't care.
They already base my insurance rates primarily on my age and what's between my legs (something I can't control and never could control at all). No outrage.
Mining my social data would be a welcome change, honestly. At least they would be trying to use more data points and be competitive.
It's an unpopular idea on HN but this.