My first digital images were made on a $150,000 DuPont Vaster Design System, which is now extinct; I still have some old tape cartridges from it, and they can still be loaded into an antique tape drive, but there's nothing available now that can read or translate the Vaster's proprietary file format. Back in the day, I imaged some of those files onto what was then the state-of-the art digital printer -- a DuPont 4Cast, a 300ppi unit that was the first publicly....
What you are describing is a failing of the people, and not of the technology. The people that owned the data choose not to migrate, thus the data is no longer available. Its not because the technology didn't allow them to copy and move the data to non-proprietary formats and current media. That is a significant difference from the technology preventing you from doing so!
If you wanted to preserve the images on the Vaeter system, you could have. You could have moved them to new media and converted them out of the proprietary format as recommended for any migration strategy. Further, if you had, and you reprinted the images today, the quality of those images would he far greater than it was 20 years ago. Technology have moved on, and the printing quality is head and shoulders above what it was even 10 years ago, let alone more. Yes, you could still have had those image resting on a shinny new DVD, with prints that far exceed the originals, had you wanted to.
The census data issue is exactly the same. It was a decision by the government not to keep the data for future use. They could have migrated the data if it was important to them. It was not, thus, they never migrated. Could they have. Absolutely, as evidenced by the amount of data from the 60's that is still available and properly archived. Because the government didn't see the value in preserving the data, doesn't mean the technology failed, and the data we compile today won't be accessible 30 years from now.
If you choose not to migrate all the images you have on CDs from 1997 on, is it a failing of the technology that in 20 years you will not be able to read them? I know I will be able to read mine, but I do migrate since I find value in doing so.
20 years ago, you could store your .bmp files on a 3.5" floppy disk. You can still read those today with machines bought of the shelf today in Best Buy. Many machines still come with floppies, and the .bmp format is still current. In 20 years from now, I am more than confident you will still be able to read .TIFF files, and most computers will come with CD-ROMs installed or easily available. However, my images would have long been converted over to whatever is current at the time, in both media and file formats. So whether or not I can read my old CDs with images stored in .TIFF files will be a moot point. If you choose not to migrate, it might not be moot point for you, but you won't have a leg to stand on if you want to argue the failing of digital imaging by citing old you let your data expire by leaving it on old media and file formats that were phased out over a long 15 year period. You will get the, 'Well dude, you didn't migrate? What do you expect LOL".
All this is akin to complaining about your Kodachrome negatives that have deteriorated and can no longer be printed because you had them stored in a dark, damp, basement. The problems would not a failing of film technology, it was a failing of proper storage. For digital, proper storage is having a migration strategy to move to new technologies before the current technologies are phased out. Currently, that means migrating every 10-15 years to whats current in both media and formats. To be absolutely safe, do it every 7 years and make two copies, since the actual longevity of CD and DVD media can't be guaranteed past 10yrs.
If I could somehow renew my 4x5 Fujichrome transparencies with new emulsion and base every 5-7 years, I might use that as an archival format instead
🙂