I wonder if they care. The amount of damage control Facebook has done in the wake of this has been pretty passive; as if they're saying "We hear you, but we're going to stay the course".
1. Go back to the 2007 FB and keep most people happy, and lose the ability to sell private data.
2. Lose 10-25% of users and monetize everyone else's data.
Facebook does not sell private data. It never has. In fact, if Facebook's evil plan were to someday start selling private data, encouraging users to make their accounts more open would make this plan less effective: you can't sell public data.
You can blame Bob for being the middle man, or me for not reading the fine print in the privacy policy, but at the end of the day FB is making money from "selling my private data"