This has everything to do with it being impossible to change the default maps app in iOS and nothing to do with the quality of Apple's maps (which is still very low in comparison to Google's). When you search for directions using Siri, it'll take you to Apple Maps. When you click on an address in another app, the same.
This is the same reason why Chrome won't be able to cement itself on iOS. If it weren't for iOS's minuscule market share, this would be justification for a major DoJ crackdown. They took MS to court just for setting a default browser - imagine what it would be like for Apple, which doesn't even let you change it.
This is the same reason why Chrome won't be able to cement itself on iOS. If it weren't for iOS's minuscule market share, this would be justification for a major DoJ crackdown. They took MS to court just for setting a default browser - imagine what it would be like for Apple, which doesn't even let you change it.