Facebook complains how Apple’s approach to privacy in iOS will have a substantial impact to their revenue. Following their own statement the impact will be as high as $10 billion for the current year. Facebook’s business model is widely perceived as being based on violating privacy.
Apple’s privacy feature disrupts the behind-the-scenes mechanics of many mobile ads, especially those that confirm whether a purchase or download was made.
Source: Facebook says Apple iOS privacy change will result in $10 billion revenue hit this year