

in addition to what others have said, i’d say a lot of civil infrastructure—hospitals, clinics, government facilities, etc—are locked in either because of bad politics or weird vendor lock in. my dad ran his own dental clinic, and he had to run a Windows server because it was required by his software vendor that did everything from appointment reminders, to the web portal, to billing, to showing which of your teeth were missing, to integrating with scanners or other equipment. it was shit software that looked like Windows 3.1 well into the 2020s, but it did the job and 24hr support was reliable. just an anecdote, but as a software engineer i was fascinated by it.





three, maybe four things:
flake.nixsome things are resistant to documentation and have a lot of stateful components (HomeAssitant is my biggest problem child from an infra perspective), but mainly being in that graph mindset of “how would i find a path here if i forgot where this was” helps a lot