What Microsoft appears to be doing isn't just letting you run Windows applications remotely, ala Office 365, but enabling you to run a full Windows desktop from a Microsoft Azure cloud. The technology to deliver "Windows desktop as a service" is really quite old, and many companies have been using variations of it since the late '90s.
The major difference between all of these other offerings and Mohoro is that these are either true thin-client operating systems — Chrome OS is little more than just enough Linux to support the Chrome Web browser — or are really just fat-client operating systems that incorporate cloud services. Why are they this way?
It's not that the cloud can't support full-powered desktops. They've been able to do that since you were first able to run a server off a cloud. Historically, the problem has been that there's not enough internet bandwidth to widely support a fat-client desktop. What works fine in a gigabit Ethernet-equipped office may not work at all on an internet where the average US broadband speed is 6.7Mbps.
Last, but not least, even if you have the necessary internet bandwidth, do you really want to put all of your desktop — lock, stock, and menu — on Microsoft's cloud? You can start thinking about renting your desktop now, because by year's end, your company will need to start considering it.
Me? I like thin-client Chromebooks, but even if I were a Windows fan, I'm not sure I'd be ready to use a fat-client, cloud-based rental desktop operating system. How about you?