My argument is that Blu-Ray will be used for games just as DVD was adopted for games this generation over CD-ROM.
Blu-Ray is an optical format, so it won\'t cost developers significantly more (if at all) than DVD at this point. It will cost more for Sony, but that isn\'t the argument and certainly doesn\'t matter to us consumers as long as the costs aren\'t passed over (which we have no reason to believe, since an adaption of Blu-Ray is an advantage to Sony and their movie industry as well).
There are a number of advantages that go for Blu-Ray over DVD:
- more storage
even if games don\'t use all the storage available, lots of that space can be used for blocks of redundant data to speed up data access and latency (data seeks are very expensive on optical media, i.e. Champions of Norath on a dual layered DVD-Rom apparently often has textures missing because of expensive data seeks).
- higher transfer rates...
...than most DVD-ROM drives. This depends though on how fast the drive will be that ships in PS3, but a 2x Blu-Ray drive should already be faster than the 12x DVD-Rom drive the Xbox360 has.