Users generally hate Facebook login but sites use it anyway because it's good for advertising and lets them outsource fraud avoidance to Facebook. The same and

Users generally hate Facebook login but sites use it anyway because it's good for advertising and lets them outsource fraud avoidance to Facebook. The same and more benefits (to sites, not users) apply to government provided auth. Again, please look at what's happening in South Korea. I think you're vastly underestimating how likely businesses are to adopt such a thing and how likely the government is to gradually incentivize (and eventually force) businesses into using it.