Yep but...
Here's Microsoft - https://learn.microsoft.com/en-us/entra/identity/devices/sso-linux?tabs=debian-install%2Cdebian-update%2Cdebian-uninstall
Google has a variety of IDM methods including Ubuntu Authd and Secure Cloud LDAP. There's also 3rd party tools like JumpCloud, ScaleOrange, etc.
Okta appears to have ASA and OPA although I'm not familiar with either of them. Ping has PingID and Ping Federate, although again I haven't used either of them.
So depending on your cloud and needs the IdM / IAM is either available NOW or it will be very soon. 😀