Why does everyone talk about Motorola PPC? The original AIM (Apple IBM Motorola) created the chip, it was based on IBM power technology. Motorola spun off it's IC business to Freescale and sold some power architecture to AMCC. The current Power.org companies are IBM, Freescale and AMCC...
But that aside, it's pretty much dead technology, used in Game consoles and Micro-controllers, and developed for those industries. If a big player came along, the Power architecture could be developed to compete with Intel, but if Apple, who was part of the alliance that created it, wasn't big enough to force that kind of development, who would be?