It's also one of the reasons why they allow 3rd parties to run their own activation servers. All you gotta do is type a couple of lines in command prompt to change your activation servers from Microsoft's to such a 3rd party, type in the volume license key they provide for free, and now you have a 100% legit copy of Windows, no cracks or workarounds needed.

Microsoft makes it so easy to activate Windows for free that there's no way it was unintentional.