News flash: Blu-ray adoption on PCs is still awfully sluggish. And we’re talking about years after the format was introduced, and over a year since it trampled HD DVD to become the lone supported next-gen high-def video format. Why? The answer is pretty simple, really. Cost and necessity. A new research report from iSuppli digs into the reasoning behind the sad truth: Blu-ray just isn’t moving the meter on PCs. While the sales of standalone Blu-ray Disc players and PS3 consoles have risen, just 3.6% of PCs shipped