@ kowenicki
Blu-Ray still isn't common enough on the PC and the Cell can still measure up very well compared to quad-core CPUs in terms of raw processing power.
For example the US military is adding more PS3s to their arsenal:
"Before it won the research award in 2008, the information directorate's advanced computing architectures team considered alternative configurations and the possibility of a hybrid system, but found multicore Xeon servers slower and more expensive than PS3s, and GPGPUs to be slower in some important types of calculations."
http://www.informationweek.com/news/software/linux/showArticle.jhtml?articleID=221900487
Of course the best selling PC games are the less demanding PC games, you can reach many more people by not targeting a top level gaming PC.







