Depending on the source Apple has 51% to 61% of the mobile market in the USA https://gs.statcounter.com/os-market-share/mobile/united-states-of-america/ https:

Depending on the source Apple has 51% to 61% of the mobile market in the USA https://gs.statcounter.com/os-market-share/mobile/united-states-of-america/ https://gs.statcounter.com/os-market-share/mobile/united-sta... And 66% of the tablet market share in the USA https://gs.statcounter.com/os-market-share/tablet/united-states-of-america https://gs.statcounter.com/os-market-share/tablet/united-sta... So yes, Apple can easily be considered a monopoly in the USA. Monopolies are regulated by countries.