Omen: There is a big reason why PowerPC CPUs are so costly. It's all about simple business economics.
Intel and AMD manufacture products for consumers (end-users). They have to be cheap to even sell their CPUs to consumers.
Freescale and IBM couldn't care less about consumers. They sell to companies. It's pure B2B. I know this, since I run a company myself. I wouldn't even dream of selling computer- parts to consumers, as I wouldn't make a dime from it.
However, selling B2B with a nice support-package generates alot more income.
It's not only about volumes, since Freescale sells millions of low-power PowerPC CPUs.
Apple did sell PowerPC CPUs to consumers, yes. But the Apple market was merely a few percent for both Freescale and IBM, so it wasn't worth much. They didn't care.
Freescale live happily on the car industry and IBM on their x86 servers. Yes, see the latest report from IBM. The iSeries is a big failure and they make their money on x86, not POWER.
Oh.. One more thing. Windows Vista doesn't run on PowerPC.