Well, when Windows 8.0 was first out, I would have agreed. Microsoft was intentionally trying to kill the desktop version of Windows. They were turning a thousand dollar PC into a smartphone wannabe, because they were trying to get their own smartphone to take off. But fast forward and even Microsoft cannot deny that a Windows phone is never going to succeed, they keep sabotaging that product too. So killing the desktop can't be their plan, unless they're just so much more incompetent that we ever imagined.
Right now their money is from the business market only. The home market is tepid and are moving away from full blown PCs towards phones and tablets, or anything that can have a browser. Out of the business market, the enterprise is the real bread and butter, they're the ones that buy Microsoft products wholesale. The enterprise isn't going to give a damn about a stupid store, they don't even allow their users to install their own products. They want Office, and only Office. And yet the enterprise is starting to move away from Windows and Office in many ways; the servers are being replaced with Linux or cloud services, Macs are showing up more often in R&D, and once that door is cracked open there's going to be a lot of IT execs who start realizing they don't need to stay in bed with Microsoft. If Microsoft did have a brain they would see this and start acting a lot nicer to this market segment.