It's probably like the US military and their missile silos still using floppy disks. Better to keep a time-tested and very familiar system running a critical operation than a new one with a bunch of unknowns. Or like when you go to the bank, and the screen the teller is looking at is just a front end going through a dozen different layers with COBOL code written by long dead or retired people on a mainframe at the other end.
Us end users with very low risk can afford to continuously live on the bleeding edge.