Earlier quoted context omitted.
Users trust Apple because Apple is ultimately accountable for security breaches on iOS devices. If a 3rd party app causes a data breach it does not matter if the breach was made possible by compliance with regulations like the DMA, Apple will still take the blame.
> Users trust Apple because Apple is ultimately accountable for security breaches on iOS devices. As a long time user of Windows which historically had an incomparably large amount of security incidents, I can assure you that Apple won't get blamed that much for 3rd party data breach unless it involves Apple's own service and user data.
I’m talking about the general public. If a story about a data breach in a 3rd party app — affecting iOS users — hits the news cycle, Apple will take the blame and their brand reputation and sales will be impacted. It doesn’t matter whose fault it really is, Apple is the face of the iPhone and through their walled garden they have accepted final responsibility for everything that occurs on iOS.