There are companies that still sell new machines of archaic operating systems for this reason. I'd really recommend anyone in the situation of justletmeremember to look into it, all that stuff could be backed up and given redundancies pretty inexpensively considering the risk.

And yeah, it's really common. There is way more horrifying applications than research that rely on legacy machines. Everyone has heard that nuclear weapons required floppy disks until very recently, but it wasn't some isolated case. Stuff like that is all over the military despite the insane amount of money it steals.