"Macs are still a single-digit market share and it's not going to change anytime soon, people are not flocking from Windows 7 to Macs regardless of what Apple-wet fans are thinking."
(sigh) Not this bollocks again...
Don't trust the "market share" statistics unless they've separated out the "Consumer sales" numbers too. If they haven't their numbers aren't worth a damn, because they'll also include every single PC in every office, every storage cupboard, every server room, every data-centre, and so on. None of which are even slightly relevant to Apple's target market.
Apple do not target the corporate sector. They've even canned their server range! They don't mind if businesses decide to buy iMacs, but they're that bothered if they don't because their primary market is—and always has been ever since Jobs returned to the company—the consumer market. As businesses are starting to move away from rigid IT infrastructures and towards the fashionable and trendy "BYOD" approach, we'll hear more about them buying Macs and iPads too, but this really isn't Apple's core strength.
Big Corporate is where Microsoft tends to shine, but Windows 8 isn't ready yet, and they're probably not expecting much uptake before Windows 9's release anyway. (Windows 8 may be a big hit, but past performance suggests it'll be Windows 9—or whatever they decide to call it—that gets the big sales, given that Windows 7 is still being rolled out in many companies.)
Apple have an installed user base of over 58 million OS X computers. That's Macs, not "all Apple devices". Just the Mac range. To put that into context, that's not far off the number of XBox 360 consoles sold in total around the world (the most recent figure I can find is 53 million by March 2011).
So, yeah, their market share is small. As "small" as the most successful games console currently on the market.