Engst said he thinks opening up iTMS to Windows users will significantly increase iTunes downloads. Although download percentages likely will not correspond to OS market share (in other words, Mac users still will make up far more than 3 to 5 percent of all iTMS downloads), he said he believes the number of overall downloads (after an initial burst of enthusiasm by Windows users) will increase between three- and five-fold.”
iTMS for Windows: Will Apple be successful?
“‘In this case,’ he added, ‘opening the iTunes Music Store up to Windows users simply expands Apple’s market without in any way harming the company’s core business in selling Macs. In fact, it even enhances sales of the iPod, which, while not a core business, shows where Apple is heading.’