At face value, Apple's (NASDAQ: AAPL) hard-line stance on privacy would seem to conflict with advertising business models. CEO Tim Cook has said on numerous occasions that users are the product for advertising companies, not whatever online software or services those companies may offer for free. The Mac maker had previously dabbled in mobile ads with iAd, a mobile ad network built with its 2010 acquisition of Quattro Wireless, primarily as a way to help developers better monetize their apps and content.