The problem is just that despite all the advantages it would bring, people won't pay for auth as a service, where your identity is tied to accounts outside of a

The problem is just that despite all the advantages it would bring, people won't pay for auth as a service, where your identity is tied to accounts outside of an email address, and you (say) get a browser/phone notification to log in when you log in with MyAuthProvider and it's quick. They'd rather go through the email route, which is the same thing but slower and goes via Google.