Not so fast, you hysterical, ignorant, and biased business article writers.
Here is some news reported in Engadget which basically proves that MS is far from over and far from irrelevant.
"Despite some launch hiccups with Windows 8 and its related devices, Microsoft has received a smashing bit of news in the form of a new $617 million licensing agreement that will bring the fledgeling OS to 75 percent of US DoD personnel. The deal also includes Office 2013 and Sharepoint 2013 Enterprise, and will let users access the software "from any location, and any supported device, while taking advantage of enhanced security," according to Redmond. Microsoft added that the agreement was "the most comprehensive" it's ever signed with the sprawling government arm, which plans to use the software for a wide range of priorities from cybersecurity to mobility. Meanwhile, the software giant is working to achieve the coveted, though highly unwieldy-sounding "Army Golden Master and Air Force Standard Desktop Configuration" compliance for Windows 8 -- which we imagine is a good thing, and hope to never have to type out again. To reconnoiter further, check the sources below."
Where is Googles $617 million dollar licensing agreement, or Apples $617 million dollar licensing agreement? Nowhere.
The adoption by DoD will undoubtedly cause the thousands of contractors with DoD and their employees to adopt Windows 8. It will also influence a huge number of large corporate business that don't do business with DoD because they will feel that if DoD trusts the products so should they. Any decision maker at the many corporations throughout the world that needs to make a decision on operating systems and security will take this as a sure sign that MS is the safe bet for them. There is a great multiplier effect to a purchase like this. How do I know? Is it because the bible told me so? No - it is because we have seen this before in the recent past.