Well, given that PC users are 90% of the computer users out there, I think you're going to have a hard time shoehorning them into any preconceived ideas like that--just like Apple is having a hard time shoehorning them into their pointlessly limited hardware offerings. Face it, at some point Apple has to open things up a bit and broaden their hardware line-up. As more people come to Macs, more and more people will demand more of Apple's relatively meager hardware offerings.
I mostly agree, but I don't wouldn't call Apple's simplified product line pointless. On some level, it is quite smart to offer a simple product line, but I believe Apple takes it way too far. There's room in their lineup for one at least more Mac - the midrange tower.
Let's look at this from the perspective of a savvy potential PC->Mac switcher. Your choices for a desktop Mac include:
1. Mac Mini.
2. iMac.
3. Mac Pro.
Keeping our potential switcher in mind...
1. Essentially a headless laptop. Weak, out of date, and surprisingly expensive. Made for people whose needs don't exceed email and web surfing or maybe a cheap file server. Not going to appeal to the more savvy PC users.
2. An all-in-one. Our savvy switchers very well might have a nice LCD which they want to bring to their Mac, so this won't do. Also, it lacks a video input, so you won't be connecting your PC, PS3, or 360 to it.
3. Mac Pro - not overpriced considering what you get, but it's very expensive and more powerful than what most people would ever need.
Assuming you have your own monitor or don't otherwise want an all-in-one, where does that leave you? There's a $1500 price difference between the most expensive Mini and the least expensive Pro - and that difference reflects a ridiculously large gap in performance.
I think Apple should condense the Mini into one SKU and drop the 4-core Mac Pro, leaving ample room for a 4-core minitower at maybe $1800. They still get a simple product line and lots of PC and Mac users get a hell of a usable machine. I quite like the iMac, but one-size does not fit all.
BTW, I'm an Apple user since the Apple IIe and I have a budget for a new Mac, but Apple doesn't leave me with much choice - I don't want to buy a Mac Pro because it's more money/power than I want, I don't want an anemic Mini, and I can't use my consoles with an iMac. So it's not just switchers whom Apple is leaving in the cold with their sparse product line. Why can't they at least put an HDCP-capable DVI and/or HDMI input on the iMac?