The problem is, once again, the installed base.
Had this problem when I was working at the EPA. People wanted to back up their documents to hardcopy, and to do so, they wanted to use ZIP drives, not CDRW.
Why?
Because ZIP is everywhere.
No rational reason, it's just cooler. Even though it costs more, is bulkier, has reliability issues, and has only a single source...
I made those arguments many times, and nobody there listened to me.
"He who fights with monsters might take care lest he thereby become a monster. And if you gaze for long into an abyss, the abyss gazes also into you." - Friedrich Nietzsche