Banks in the US depend on government-issued ID and information contracted from credit bureaus (3 big companies that are effectively data brokers about consumer lending behavior). We have federated identity, but in a weird, ineffective way.

Every once in a while, someone bold makes a political proposal to make our authentication / identity proof systems simpler, but then people realize the privacy implications (and religious fundamentalists point to the “mark of the beast” part of the Bible) and then the proposal doesn’t go anywhere.