They want us on clouds paying for a subscription. Otherwise these cartridges which can hold terabytes and last for 50+ years would be dirt cheap like your ex.
A cabinet like device where it has an arm to change tbe cartridges, and a software/ssd to view metadada, thumbnail, video preview is all a family needs… I think
I want to preserve data but it is hard and costly.
Bonus: imagine if the software would help you pic archival grade file formats and warn you when a file format is going obsolete.
There is a cool software I use called Wincatalog.
Cuckoo out

Why don’t you buy a BD-ROM drive and burn around 50GB data to those? Then they have those drive cases that’ll hold around 100 discs on a soft sleeve, easy to store, lightweight, but takes manual moving. But of you’re prose is archival/backup, that’s the way to go.
I’ve got stacks of DVD-ROM discs from almost 20 years ago that hold 4.7GB data each iirc and have flip phone pictures and video on just to not waste space on a backup hard drives that’s not likely to fail. I do have a BD-ROM drive now but never cared to pull data from disc to HDD, then reburn multiple onto 1 or 2 BD discs. Would make sense to do it as it’ll reset the preservation clock, be ~$100 drive, and last about 30 years.
You’re looking for inexpensive, long term, low technical skill. And I give you a solution that doesn’t require giving Sony money outside of royalties for blu ray tech.