If you’re into self hosting at all check out caliber-web, which uses a calibre-compatible db/backend but a web-based fronted. I switched about 3 years ago after importing my old calibre db and never looked back (household is doing around 90 books/year)

Who’s to say they didn’t though? With the possible exception of not checking the IT company’s financial health (and maybe they did but decided it wasn’t a risk), the process worked as intended. They outsourced their storage and backups. The data is still stored and backed up. They were able to follow a remediation protocol (ie speaking to the judge) to regain access.

Having worked with huge, slow organizations before, they probably had a mandate in place to outsource this kind of thing, and nobody in-house to evaluate the solution, so they picked an “expert” company who then went out of business.