https://techcrunch.com/2020/07/29/apples-app-store-commission-structure-called-into-question-in-antitrust-hearing/

Apple CEO Tim Cook defended the company’s App Store commission structure in his sworn testimony before the House Antitrust Subcommittee on Wednesday. He claimed the majority of the apps pay no commission at all, with others paying either 15 or 30 percent, based on the specifics of their particular situation. He said developers were all treated equally and that Apple wouldn’t raise commissions, because it had to compete for developer interest in its platform as well.

But the documents shared by the House subcommittee as part of their investigation indicate that exceptions to Apple’s rules have been made — notably, with Amazon’s Prime Video app. In addition, Apple may have never raised commissions, but discussions weren’t off the table. It had once even considered raising commissions to 40% in particular situations.