Because in the US they will not be forced to (and likely won't) allow Firefox, Chrome, Brave, etc, with their own rendering engines, on the App Store, and if th

Because in the US they will not be forced to (and likely won't) allow Firefox, Chrome, Brave, etc, with their own rendering engines, on the App Store, and if they do, they will definitely not allow them to become the PWA storefronts they are on Android. Adoption of PWA on Apple platforms is low because they've always had a significantly degraded experience when compared to PWA on Android, ChromeOS, or desktop browsers other than Safari.