Why? It's extremely expensive and lacks significantly compared to its PC counterparts.
If you are going to spend $1000+ on a computer, I think the vast majority are going to be fairly clued up on what they are buying. They will look at the specs and see they lack majorly compared to Dell, HP, or Mr. Whitebox.
Don't say the software is better because frankly people don't trust bundled software anymore after years of crap from the PC makers. They need to be educated on this, but they are simply not.
I think Apple needs to cut the PowerMac prices significantly, and perhaps the iMac's soon.
What I do think would be a very good idea to clear out all this inventory they have is a '$100' iPod deal. Buy an iMac, get an iPod for $100. It'd work better than a simple price cut of $150 (the 'loss' in terms of the iPod sticker) and would be a great upsell (Welcome to the Apple Store. You want an iPod? Well.. take a look at this great deal:
shows a great iMac with an iPod for less than half price).
Well, I don't know. Seems like a good idea to me
.