I've written to the UK Competition and Market Authority about PWAs and Web Apps on iOS: https://alistairshepherd.uk/writing/cma-mobile-browsers-remedies/
You should too!
@owa has a great article on why and what: https://open-web-advocacy.org/blog/uk-browser-and-cloud-investigation-may-fail-to-allow-web-app-competition/#we-need-your-help!-act-today!
So does @brucelawson: https://brucelawson.co.uk/2024/web-apps-on-ios-is-the-cma-missing-the-point/