On the desktop, you can change the default browser. It's still a competitive advantage to be the default, but at least a user who wants to can make a one time c

On the desktop, you can change the default browser. It's still a competitive advantage to be the default, but at least a user who wants to can make a one time change. On iOS, even people who would very much prefer a competitor end up using Apple's apps just because to avoid them means giving up on things like Siri, tapping links from emails, etc.