OIDC has very much “caught on” in business contexts. Large organizations end up with hundreds or thousands of independent internal tools, many hosted externally. OIDC and SAML are common protocols for centralizing employee authentication and governance.
It’s not really “OIDC”, though, because there’s so many options possible that the standard itself is basically useless: you have to implement Google, Microsoft, Okta, etc. separately anyways
