Google is apparently working on a credential provider that allows users of G Suite to logon to Windows 10 PCs using a Google account. A Google administrator can create a Google Accounts and ID Administration (GAIA) account that allows enterprise users to logon to their Windows 10 PC and access Google services. This feature is still in code review stage and a possible rollout date is not yet known.
https://www.notebookcheck.net/Windows-10-will-soon-allow-logins-via-a-Google-Account.327258.0.html