If the xbox switched to blue ray, microsoft will be losing 100% of their customers to sony.
Both are HD gaming machines, one runs DVD/HDDVD the other runs blue ray, if both went blue ray, then what is the difference?
Microsoft will be smart to bring back the popularity of the HD DVD drive, and start making games onto HD DVD, you can hold 16gig on 1 HD DVD disc, or 32 on a duel layer disc, that can compete with blue ray in the gaming world.