Books that have survived into the present from antiquity did so (except in a few unusual cases like the Dead Sea Scrolls) not because the physical media survive

Books that have survived into the present from antiquity did so (except in a few unusual cases like the Dead Sea Scrolls) not because the physical media survived from antiquity but because people copied them onto new media over and over again. Sometimes they even translated them into new languages -- many works in ancient Greek we only have today in Arabic translation. Assuming that we don't descend into a "Mad Max" style primitive society, I could see current computer data surviving centuries or millennia given how small current data will seem. It's like how storing ROM dumps of every Nintendo NES cartridge is a trivial amount of space today.