Microsoft is bleeding power users and PC enthusiasts at an unprecedented rate. This is a great thing for Linux, but they are still absolutely locked into the corporate world and that's where the money is.
The reality is that Microsoft solved management of corporate policy and identity like 25 years ago and nothing else has come close. It has its problems, but Active Directory is an incredible piece of software. The combination of LDAP, with obfuscation of Kerberos to the point where you don't even need to know it exists, combined with policy deployment to endpoints is nothing short of a miracle.
Linux has tools for all those things, but none are easy to deploy or configure. If you have to manage thousands of desktops, Windows is still the clear choice
