If cash, tobacco, or motorcycles were in invented this century they'd have been outlawed. Digital encryption barely squeeked through due to popping up before 9/11.

Hmm plenty of people on low incomes or in market trades stunt have been accounts. Plenty of lie income people can't get credit cards. Plenty of people simply object to being forced to use a system that can and had refused to hand over their own cash on a whim (see Lebanon recently). So yeah, there are lots of reasons.