In MacOS and iOS, the procedure for converting images from the Photos format to a free format is so tedious and time-consuming that users just give up if they have a lot of them.
Apple devices lock users in solely to Apple services by being designed to be incompatible with all other options, ethical or unethical.
iWork (office software that runs on MacOS, iOS and iCloud) uses secret formats and provides no means of converting them to or from Open Document Formats. iWork formats have changed several times since they were first introduced. This may have had the effect of thwarting reverse engineering efforts, thus preventing free software from fully supporting them.
iWork formats are considered unfit for document preservation.