So yes but... there are still no good alternatives to Active Directory in the context of managing IT for an organization with 10,000+ users, thousands of endpoints, and millions of files which need to maintain proper association with individual user accounts and be delivered to specific endpoints on demand.
Google Workspace is the most feature-rich competitor, but it is a pale shadow of the level of IT infrastructure that Microsoft's ecosystem provides.
For Microsoft to fade away, someone needs to build a competing large-scale IT management system that provides the same kind of functionality that Active Directory does.