Yeah, but the issue is they didn’t buy a legal copy of the book. Once you own the book, you can read it as many times as you want. They didn’t legally own the books.

There‘s also the FSEvents database on the root of every disk which is a database of all the file events/operations that happened on that disk.

Supposedly you can disable it, but I haven’t got it to work. For example if you download a sensitive file, do something with it, and delete it. You can see this in the FSEvents database.

This is already a recall type feature at the file system level.