Regular storage mediums are just too fragile and if you have a lot of data transferring it over takes too long we're still digitizing books.
Long term storage medium capacity doesn't need to progress in line with regular storage mediums it just need to be updated once it's too out of sync.
The old data can stay on the old version since there's no urgency in transferring it over as long as the spec for it is kept on the latest medium a reader can always be built to read it.
We tend to worry about not having devices to read it but given how 3D printers are progressing having the spec and building a replacement reader should be easy enough.
Long term storage medium capacity doesn't need to progress in line with regular storage mediums it just need to be updated once it's too out of sync.
The old data can stay on the old version since there's no urgency in transferring it over as long as the spec for it is kept on the latest medium a reader can always be built to read it.
We tend to worry about not having devices to read it but given how 3D printers are progressing having the spec and building a replacement reader should be easy enough.