In Finland its totally opposite. We have 10 or so banks, which all have their own authentication methods and government has outsourced authentication to banks. And every authentication costs 0,10€ (it was previously much higher amount, something like 0,70€ but it is now [since 2017] limited by law).
So, I think at least in Finland banks will be the ones who will come up with several reasons why they should not implement this new authentication method.