[quote]The IDC numbers don't account for the installed base - only units sold in a specific time frame.<hr></blockquote>
Installed base and market share are not the same thing and are not calculated the same way. Apple's market share is under 3% and has been for well over a year. Apple's installed base is higher than that, but this as a percentage is shrinking because of the shrinking in market share. The two are not the same thing, but there is causality in their relationship, at least in the long run. In the short term, trends are harder to see.
Installed base and market share are not the same thing and are not calculated the same way. Apple's market share is under 3% and has been for well over a year. Apple's installed base is higher than that, but this as a percentage is shrinking because of the shrinking in market share. The two are not the same thing, but there is causality in their relationship, at least in the long run. In the short term, trends are harder to see.




