IOS has a 58% market share in the US [0] which single handedly is well above the threshold of market power using the Herfindahl–Hirschman Index [1] which the an

IOS has a 58% market share in the US [0] which single handedly is well above the threshold of market power using the Herfindahl–Hirschman Index [1] which the antitrust department uses for mergers and acquisitions concerns (they don't care about international users). "The Supreme Court has defined market power as the ability to raise prices above those that would be charged in a competitive market, and monopoly power as the power to control prices or exclude competition" [2]. For people wanting to sell software to mobile users for which web does not suffice, there is no substitute and apple actively excludes you from 58% of the US market if you need mobile software unless you accept Apples 30% cut. With Android at least, they don't exclude you as you can side load like fortnite [3] but Apple is 100% abusing their market power by excluding developers from avoiding their 30% fee. [0]: https://gs.statcounter.com/os-market-share/mobile/united-states-of-america/ https://gs.statcounter.com/os-market-share/mobile/united-sta... [1]: https://en.wikipedia.org/wiki/Herfindahl%E2%80%93Hirschman_Index https://en.wikipedia.org/wiki/Herfindahl%E2%80%93Hirschman_I... [2]: https://www.justice.gov/atr/competition-and-monopoly-single-firm-conduct-under-section-2-sherman-act-chapter-2 https://www.justice.gov/atr/competition-and-monopoly-single-... [3]: https://www.theverge.com/2018/8/3/17645982/epic-games-fortnite-android-version-bypass-google-play-store https://www.theverge.com/2018/8/3/17645982/epic-games-fortni...