Galliardist
Major Contributor
Apple, like any other company, only cares about things to the extent that they are profitable and benefit the shareholders. Remember, twenty five years ago they were bailed out, effectively, by their biggest rival because just for once that rival realised the value of competition, and also because that rival made much more money for every copy of its second most important product (at the time) sold to customers using Macs than they could on their own OS.You're so cynical. Apple has a review process for apps submitted for inclusion in the app store, and it doesn't look cheap to implement.
App Review - App Store - Apple Developer
Learn about the technical, content, and design criteria used to review apps submitted to the App Store.developer.apple.com
Apple cares about customer security because their customers value safety. It's as simple as that.
Because their previous CEO realised that the new platform they were building could be both more secure and more profitable at the same time, we have iOS today. If they thought that breaking that security model would double their profits in five years, that is precisely what they would do. Remember Google, and "don't be evil"?