Yes, but that is going to take a long time for the systems to catch up to the point that a rural community has the tech in every last nook so as to not need cas

Yes, but that is going to take a long time for the systems to catch up to the point that a rural community has the tech in every last nook so as to not need cash. Maybe decades. Some people will still want to deal in cash, so if the government doesn't provide it there will be some other kind of barter. Gift cards, those printed Bitcoin notes, foreign cash, gold or something else.