From my position, the mobile app shenanigans look like little more than intracompany politics. Where Facebook is not getting data, Apple or Google are still happily collecting.

Overall, I would guess that there is no track record of trust because expectations remain unclear. Concepts of privacy, data usage, and such didn't exist before Facebook and others. I suppose I am not eager to assume malintent outside what is standard for any business operating for the sake of profit.