Facebook accusing rival tech behemoth Apple of engaging in anti-competitive practices involves an interesting role reversal. The Federal Trade Commission and 46 US states are suing the social network, which also owns WhatsApp and Instagram, over alleged anti-competitive practices.

Mark Zuckerberg took aim at Apple’s planned privacy changes to its iOS 14 operating system during the Facebook earnings call on Thursday. The new rules will require applications on iPhones — via a pop-up message — to obtain users’ permission to harvest data for targeted advertising.

Mr Zuckerberg has $84bn worth of reasons to be outspoken. Nearly all of Facebook’s revenue last year came from advertising. While iPhone owners can already opt out of data tracking, Apple’s privacy changes will make it much easier. Targeting users will get harder for advertisers.