This I find the biggest recurring shortsightedness in this type of thread.
A Mac or a PC can both run Ubunty instead. Ubuntu, which is a Linux OS, is just like OS X a Unix variety. And many things you like in OS X and mis in Windows can be found in Ubuntu as well. And it's free!
Some people choose Mac for the build quality.
Some people choose Mac for the OS.
And some people choose Mac for the "Mac experience" which is basically a combination of the two things above.
In my opinion, Ubuntu is only an option for people in the first category. Until it gets a bit more mainstream, I think it's more geared towards the DIY crowd that feels comfortable and even enjoys tweaking software/hardware. The average consumer has enough trouble with basic computer skills, never mind anything at a higher level!
On a side note, I think it's pretty sad that people are having to choose a Mac they are not happy with, based solely on the fact that they need Mac OS X. While I understand Apple's reasoning behind this, it made more sense back when their focus and priorities were different.
From a hardware perspective, other companies seem to be catching up or even surpassing Apple, depending on how you value specs/design/build.
From a software perspective, Windows 7 seems to offer some real competition to Mac OS X for Mac owners. The amount of people willingly running Windows 7 on their Mac, and in some cases even preferring it to OS X for certain tasks, is a testament to this. To me this is a very alarming trend that can have severe long term consequences. Of course, if the goal is to slowly transition out of the "computer" category and focus their resources on the "mobility" category, then this would be one way to do it.
I'm starting to worry that Apple is spreading itself too thin, and that we'll start seeing an increasing amount of compromises, as focus is shifted from innovation to whatever brings in the most revenue. Sometimes there is an overlap, and a perfect balance can be achieved. But unless Apple is betting their entire future on mobile devices running iPhone OS...I really hope that we will see some amazing things soon, announced either at WWDC or for their 2011 lineup.
I can only hope that they remember their roots, and don't end up becoming the type of company that they were originally trying to rebel against.
/endrant (sorry for straying off topic!)