Failed hardware is different, but hospitals likely have very few computers just 'lying around'. Especially the highly regulated machines, such as those which are attached to MRIs and the like.
CFR 21 Part 11 was the bane of my existence. Software that can be installed and configured in a matter of minutes? That's a six month project, at least. Sure, backups are great, but then you've got a significant process to get it back up and running.
These aren't early-2000 logging operations.
I see you'll never be convinced, but this is how modern operations work. Being a hospital (or other industry with heavy government regulations) make operations that much worse.