iAd did poorly because Apple was unwilling to share data about their customers with advertisers. >Advertisers Not Thrilled With Apple’s Practice Of Protecting

iAd did poorly because Apple was unwilling to share data about their customers with advertisers. >Advertisers Not Thrilled With Apple’s Practice Of Protecting Its Users’ Data... rather than offering a cookie-based ad-tracking and targeting mechanism, it essentially requires partners to tell it what kind of audience it needs to reach, and then trust that Apple will handle the rest https://techcrunch.com/2014/02/18/advertisers-not-thrilled-with-apples-practice-of-protecting-its-users-data/ https://techcrunch.com/2014/02/18/advertisers-not-thrilled-w... Ping was intended to integrate with Facebook, but Jobs canceled that integration at the last second, citing “onerous terms that we could not agree to”. It's uncertain if those terms were privacy related. http://allthingsd.com/20100902/steve-jobs-on-why-facebook-is-not-part-of-apples-new-ping-music-social-network-onerous-terms/ http://allthingsd.com/20100902/steve-jobs-on-why-facebook-is...