And the G5 really only failed because of cooling issues - obviously, IBM has been able to continue to push the POWER platform that undergirded PowerPC far beyond the G5
Not just cooling -- the G5 drew too much power to be viable in one of Apple's growth markets at the time: laptops. The Intel Core chips were based on the Pentium M microarchitecture and so already had power characteristics that were suited for laptop use.
Of course, POWER would go on to be a great arch for desktop and server use, but that wasn't enough for Apple after the G4.
Of course, POWER would go on to be a great arch for desktop and server use, but that wasn't enough for Apple after the G4.