It would make sense for the Windows 10 Enterprise crowd, they already pay a monthly fee of $7, and it'd be worth it for them, but how is Microsoft going to guarantee patches won't break computers where after two years Windows 10 patches are still breaking computers? What business in their right mind would trust Microsoft to not cost them revenue over their own IT department?
Microsoft has had its toes in the water of software as a service (SaaS) for a while now, with Office 365 being one of the most visible of these services. A new rumor is going around that claims Microsoft is eyeing a move to offering Windows as a Service as well. Reports are that the service will be called 'Microsoft Managed Desktop' and that Redmond will be driving the initiative vigorously.
That service would allow a subscriber to lease a Windows 10 device that is automatically provisioned and kept up to date for a set monthly fee. There is no indication that this will be the only way Microsoft will offer Windows. We believe it would make sense for Microsoft to offer Microsoft Managed Desktop for the workstation crowd or enterprise users not wanting to have to manage hundreds or thousands of PCs individually.
In fact, Microsoft already has an executive in place to drive Microsoft Managed Desktop, and that exec is Bill Karagounis, former Director of the Windows Insider Program & OS Fundamentals team. More recently, he was part of the Enterprise Mobility and Management team under Windows and Devices. It's not clear how or when Microsoft plans to launch Microsoft Managed Desktop Service but it's coming, reportedly.