Columnist K.C. Swanson has written an article on TheStreet.com today regarding the runaway success of Apple’s iPod and the low market share of the company’s Macintosh computers. She writes in part: “But few tech watchers believe Apple can regain its former market-share heft in the computing arena. Research firm IDC’s Roger Kay, director of client computing, said that could come to pass only ‘if Apple were to execute perfectly, the drumroll of new products continued at the same pace, and the other guys screwed up.’ But he counts that as a ‘very low probability.'”