My 2, 3, 4 & 5 cents:
I don't think this Intel/IBM thing is a war between chips, I think it's more about the OS'es. I think Apple will keep IBM PPC for high end (G5, server) computers and Intel for low end (Mini's) which would be smart, more selling point. Apple hardcore users would stick with IBM and MAC entry users would go with Intel (cheaper price tag). There is still a lot of computer users out there oblivious to MAC, many started to learn about it because of IPod's. See, all here who come to MacRumors know what a MAC is, but ask your neighbor if he would buy a PC or a MAC. He'll most likely say "I have a PC or thinking of going to "BestBuy" to get one, but what's a MAC?" then Steve decides to "Open Doors not Windows".
Currently Microsoft dominates most of the work place environment with Windows and home users who are hard core gamers (smart ones get MAC) and I don't want to mention Linux. The fact that you can sell an operating system that would run on PPC and Intel opens a new market for both Apple and "the lost souls" that don't know MAC. And the fact that next MAC OS version launches next to Longhorn, priceless, which instead of Leopard should have the name Hyena (get it?

).
The world has been asking for a stable operating system, Apple will deliver. Can't afford to buy a new computer? Here's the operating system, just install to your Intel computer (or on top of your Windows,

) and......wait, this seems familiar......oh yes.....Windows Media and ITunes for Windows......ITunes hands down.
Current Retail prices - OSX $129 = WINXPPro $299 (prices taken from Microsoft.com and Apple.com, I know it's cheaper elsewhere).
Yes, I've heard people say "Hey that ITunes is great, what's a MAC?".
(Windows XP on a GP-233 with 192 ram, 4gb hard drive and blue screens, yes my job has a dozen tons of 'em and not a single MAC, don't ask me how it runs, I still have a job and while my kid beats on my PC, I'm happy with my PowerMAC & PowerBook at home. Yes, when it comes out I'll give my kid XP CD to play with, install OS X .5 to my PC and then wait for LongHorn with Service Pack 5 CD).