Prognostication

Hmmm....

Item: Apple is now shipping on Intel hardware.
Item: OS 10.5 will be shipping with Boot Camp pre built in.

Given those, I suspect that game makers now have less incentive to create games for OS X. The presumption being that anyone who needs to can boot Windows and run their games there. Why go to the extensive effort to port games to OS X?

Therefore: There may be fewer games released for the Mac
Therefore: More gaming will be done on Mac hardware, but Windows OS.
Therefore: Macintosh machines will come under similar upgrade pressure as PC machines, thanks to increased gaming numbers.
Therefore: Apple will be under increased pressure to permit at least graphics card upgrades to their mid-line machines (iMac).

Hmmmm....