The feature is the discounted price of the OS. See, MSFT wants to charge you about 3x the MSRP and gain recurring revenue.

Although they won't give normal users this option, if you wanted the non-spyware version of Windows, you would need to pay a subscription.

The computer is part of the cloud, but the user is paying for electricity and storage costs. At the loss of privacy the user gets all their data backed up in cloud discoverable through a bing web search from any workstation