Facebook CEO defends advertising-supported business model

Mark Zuckerberg's defense comes after Apple CEO Tim Cook said his company wouldn't be in Facebook's situation because Apple doesn't sell ads based on customer data the way Facebook does.

Zuckerberg responded that an advertising-supported business model is the only way that the service can survive because not everyone would be able to pay for Facebook if it charged a fee. He says the idea that Facebook doesn't care about its customers is "extremely glib."

Facebook is facing scrutiny over its data collection following allegations that political consulting firm Cambridge Analytica obtained data on tens of millions of Facebook users to try to influence elections. Mark Zuckerberg spoke with Vox, while Cook talked with Recode last week.