That's a rather simplistic view of it.
IBM wouldn't have been picked to make the chips unless the companies picking them knew that they'd get the Power architecture. They also wouldn't have simply had the Power one foisted upon them without a say in the matter.
All three of them chose to use IBM because of the Power architecture. MIPS is a fairly nice architecture, I've coded for the version of MIPS32 used in the PSP and PS2.
Just occurred to me i should point out that im not talking out of my bum, i work for a games company on PSP, PS2, PS3, XBOX, XBOX360, Wii and PC. I've written everything from assembler on the PSP to C++ OOP on the PC with a wide and crazy ark through software development inbetween :-D
Also the Power architecture is being actively developed to the tune of billions of dollars a year by IBM. Do you ever see them switching to licencing an architecture from Intel/AMD? :crazy:
The are versions of Power used everywhere in embedded stuff, and when it comes to the higher end there's still stuff thats implemented in the Power5 which hasn't filtered down into the lower end yet.
Ah bollocks to it, CPU architecture as a reason to love or loathe a platform is a religious argument. Sorry if i've ranted a bit.
Andy