Apple allows Facebook, Instagram, and Twitter to sell ads, which are digital goods, in their iOS apps via direct transactions, avoiding IAP and the 30% cut (Oliver Reichenstein/iA)

Oliver Reichenstein / iA:
Apple allows Facebook, Instagram, and Twitter to sell ads, which are digital goods, in their iOS apps via direct transactions, avoiding IAP and the 30% cut  —  Why should Facebook—the biggest beneficiary of the iPhone, its tools, and its infrastructure—pay $99.-, when small developers have to pay tens and hundreds of thousands?