The lack of data both companies (ed: Apple and Amazon) deliver is frustrating for marketers because these notoriously opaque giants sit atop incredible troves of information about what consumers actually buy and like, as well as who they are and where they live. One person familiar with the situation exec said Apple's refusal to share data makes it the best-looking girl at the party, forced to wear a bag over her head.
Apple knows names and addresses, geographic locations and app and music-purchase histories, and can show ad buyers that a group with specific characteristics also likes certain types of apps or music. However, its user tracking and ad targeting are not cookie-based, meaning agencies can't do automated buys via their cookie-centric trading desks, which allow them to mesh lots of data from different sources. Instead, they have to go to Apple, ask to reach a given audience and, well, trust Apple that it will deliver it.
That's me, playing the world's smallest violin.