'Privacy and security' allows them to justify taking a cut of 30% from developers for simply allowing their apps to be installed on an Apple device, which is then passed onto you.

'Privacy and security' is why you need to update your perfectly capable phone after X amount of years because Apple stopped releasing updates for it.

'Privacy and security' is why they removed ad tracking on devices used by competitors, forcing developers into Apple's payment streams where.. you guessed it, they take a cut. They then created their own App Store advertising model in the process. No alternative payment methods are available on Apple devices because 'privacy and security'.