> That's because you need Royal Assent in order to be a bank in Canada. Unlike the US that has hundreds (if not thousands) of banks, Canada only has 5 (or is it 6 now?) massive banks.

This isn't really accurate, in that creating a bank nowadays requires only conformation to The Bank Act, not any royal (or by-proxy Governor General) consent. There are 44 domestic or domestic-subsidiary-of-foreign-corporation Schedule 1 banks in Canada, and 600+ credit unions. The big 5 dominate, but more for historical reasons than anything else.

The long prevalence of things like chip-and-pin and email money transfers and other modern amenities that are just starting to show up in the US has more to do with a marked preference for standardization governed by industry consortiums like Interac in Canada, rather than multiple competing, incompatible credit networks that debit piggybacks on top of, I suspect.