Yes, this is the Apple "Walled Garden" philosophy, which can be looked at as (a) Apple make no money off it, so why allow it? But Apple can sell apps on Android

Yes, this is the Apple "Walled Garden" philosophy, which can be looked at as (a) Apple make no money off it, so why allow it? But Apple can sell apps on Android if they wish. (b) Android security is so bad for the safety of all IOS users we must guard it well. Added together, Apple can act in an antitrust manner if it wants to, everyone likes to shoot fish in a barrel, and it would take 5 years of litigation to change it - unless some Government body can decide to do it