I'm not going to post here like I'm some big tech savvy guy, but I do know this. I like that Apple has an Intel inside because when I do need to run windows I can. Sometimes I need to run GIS for work, but unfortunately there is no Mac version. I like being able to reboot and launch Boot Camp and run Windows programs. If Mac switched chipset manufactories, I wonder if the computer would be able to run Windows. Prices have also come down since Apple switched to Intel. This price drop has allowed me to afford more Mac than I would have been able to in the past.
I also recall their being hackintoshes even before they went to Intel. Maybe it's easier to do it now that OSX runs on Intel machines, but I doubt this would go away even if they made their own chipsets or had someone else make them for Apple. Basically my post boils down to this. I'm a PC convert that really love his Mac, and I don't want to see Apple ruin a good thing. Apple, stay with Intel!