Power-Architecture is good but it's not for desktop machines since no supplier choose to use it on the market, i think the price is not the problem, if a big potential market exist ibm can afford low prices like for xbox360 and ps3 for very interesting processors.
The best chance is the opening of the power architecture, because one day a big chinese supplier may use it for the chinese market.
if they can build powerfull processors themselve so it could be interesting for them.