I'd call it a duopoly, which is not as bad as a monopoly but it's definitely enough to set market prices and arguably should subject them to antitrust scrutiny

I'd call it a duopoly, which is not as bad as a monopoly but it's definitely enough to set market prices and arguably should subject them to antitrust scrutiny for anti-competitive behavior. They have more than 50% of global app sales revenue; Apple's App Store revenue is about 80% higher than Google Play. They also have about 57% of the "premium" ($400+) smartphone market. That has a strong impact on the ability for developers to create and sell apps. Not to say that Google is innocent either; they've started adopting some of Apple's practices as well. Unless you're a masochist, going outside the Apple/Google ecosystem is not really a viable option. https://techcrunch.com/2019/07/03/app-revenue-tops-39-billion-in-first-half-of-2019-up-15-from-first-half-of-last-year/ https://techcrunch.com/2019/07/03/app-revenue-tops-39-billio... https://www.gsmarena.com/counterpoint_flagship_smartphone_shipments_dipped_by_13_in_q1_apple_had_4_of_the_5_best_sellers-news-43799.php https://www.gsmarena.com/counterpoint_flagship_smartphone_sh...