@ selnor
And Isaid Mass Effect because it's currently one of the biggest games and looks absolutely stunning. but it fits on 1 disc.
Even if so (I haven''t played the game yet), what's really your point?
PGR4 has been scaled back graphically alledgedly according to the developing company due to DVD storage limitations, Blue Dragon already comes supplied on 3 discs, the developers behind GTA IV complained about DVD storage limitations (most likely hurting both XBox 360 and PS3 versions), etc.
Couldn't Mass Effect possibly have become an even bigger game or include more graphics, support 7.1 audio, etc, etc? IMO DVD is well suited for the Nintendo Wii and PS2, in the case of the XBox 360 or PS3 it would IMO be an important limiting factor (developers making sacrifices to store the game on as few as possible discs, like already seems to be the case).
Let's assume with some future game, data is streamed constantly at 5MB/s on average. All the data on a 50 GB Blu-Ray disc would be read in less than 3 hours.