Uh-oh.... Anybody following WWDC?

[Alex Tweedly]

Richard Gaskin wrote:

>    the Software and Information Industry Association. In addition,
>    the Software Publishers Association (SPA) estimates that 16 percent
>    of computer users are on Macs.
>    <http://macdailynews.com/index.php/weblog/comments/5933/>
>
> I haven't seen how those figures were derived either, but it raises an 
> interesing question:
>
> If Apple, for the first time since Jobs came back, not only returned 
> to the 10% marketshare of a decade ago but actually exceeded it by 
> another 6 points, why wouldn't Apple be shouting this from the rooftops.
>
> If memory serves, at 16% this would mean we currently have the largest 
> marketshare in the history Mac history.
>
You're confusing marketshare and installed base share.

The theory is that Wintel (or at least Windows) users need to upgrade 
more frequently (because every new version of Windows is more bloated - 
apparently new versions of OS X have been the same or even more efficient).

If you had 2 users each buy a machine at the same time
 Windows users upgrades his machine every year
 Mac user upgrades his machine every 3 years

So Mac has 25% of the *marketshare* - but still has 50% of the users.

Hence the long-term (and increasing) difference between marketshare and 
%age of users. Gartner has always published marketshare data.


-- 
Alex Tweedly       http://www.tweedly.net



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