Indeed, though that could very well be that no one else wants to buy it as much as IBM not wanting to sell it. POWER as an architecture seems to have thoroughly lost momentum everywhere except at IBM themselves (the console market dropped it, what remains of PA Semi do ARM based designs in Apple), which is a bad sign. MIPS and SPARC were both here before.
I agree though that's it is a dying architecture and it would surprise me if even Nintendo bothered to use it for their next generation (especially since Dolphin has clearly demonstrated that emulating these PPC chips is viable for backwards compatibility).
Former IBM'er here. Power Systems are not as ubiquitous as you think. Their biggest customers are insurance/banking companies, but that consumer base has been gradually shrinking with organizations migrating to more affordable commodity clouds (Amazon, etc.) and services.
The Power Division within STG has been declining in revenue for at least 6 straight quarters, and employees within that division are first on the list whenever IBM wants to perform a layoff.
IBM no longer has anything to do with embedded PowerPC. That is all Freescale. The lines diverged sometime back in 2005 or 2006. The POWER5, POWER6, and POWER7 are quite a bit different from the PowerPC.
