Earlier quoted context omitted.
Files are data. Data should be eternal. You should be able to convert a presentation you make today 30 years from now to a newer format. Making software not-backwards compatible is fine and normal but if files expire in a few years Apple is saying that the things you do on their computers are disposable.
It is eternal, as long as you have the system and the software that it was created with. This can be said for all sorts of things, from the Commodore 64 to Keynote. If you want to be able to access the data on an NES cartridge you are going to need special hardware and software. Yes the ROMS are available now online, but that's only because someone with the hardware and software made it available to others. This is t…
Indeed. When you choose to save your work in a not-public format, you are decidîng not to care about its lifespan: complaining later is just useless, unfortunately.