As mentioned elsewhere in this tread, the impermanence of the media is complicated by the rapid evolution of technology. That a particular piece or volume might survive will be rendered mute by future generations inability to access the technology. Preservation and longevity are not a new problems. Nor are they limited to digital media. Last November a leaky roof took out all my college life drawing work and the originals to my first published cartoons.
All art has age limits.
Oils darken, watercolors fade. Sculptures are crumbled by weight, water and heat. Only the most cherished, and perhaps, randomly, the luckiest survive through great expense and care. Perhaps that is a certain filter. A way in which history purifies and edits itself.