Now you can say, "MS has missed the big trends like mobile devices and search". This is true, but at the same time they've really nailed the enterprise. Not sexy, but they went from people saying, "MS is a desktop OS, not a server" to them being one of the dominant server software providers. From Windows Server to SQL Server to Sharepoint to BizTalk.
If I were Ballmer and my head was on the chopping block my argument would be, "I've made us essential in the enterprise. This is revenue that we will see for decades. Sure, the consumer market I didn't do as well, but given a choice I'll take the less glamorous enterprise market. Why? In the consumer market you can go from market leader to struggling to make a profit in one product cycle (see Nintendo and Sony in the past decade)."
I'm no Ballmer apologist, but I just think there's an argument. Although really the stock price is hard to argue against.
In 3Q FY10 their breakdown was: Windows 3.0B Office 2.6B Server 1.3B
And note, this is profit for the quarter, not revenue. So their server division (which also includes VS -- which makes good revenue, but not great income) is about half of Office income. And I believe Sharepoint is counted in the Office income, although I'd consider it a server product and it brings in more than $1B revenue (not sure about the margins on it though).
Their team is about 26 people (26 of probably bottom line, not including Product managers, PMU, and everything all the way up).
And the Internet.
http://www.youtube.com/watch?v=tGvHNNOLnCk
A used car salesman running Microsoft is out of his depth. Is it really any surprise the company has floundered for years?