I wouldn't be surprised if the owner _deliberately_ didn't create backups.
I used to work in academia. Some of the academics I knew were extremely paranoid about anybody (including SysAdmins) accessing their research. They would go to great lengths to to keep their work away from the "prying eyes of the university" (a phrase someone used once). This meant not allowing any access to their personal desktops, laptops, etc. Admins worked around the personal desktop issue by refusing to help them with the inevitable problems unless they got access. But laptops were a different story.
I used to work in academia. Some of the academics I knew were extremely paranoid about anybody (including SysAdmins) accessing their research. They would go to great lengths to to keep their work away from the "prying eyes of the university" (a phrase someone used once). This meant not allowing any access to their personal desktops, laptops, etc. Admins worked around the personal desktop issue by refusing to help them with the inevitable problems unless they got access. But laptops were a different story.