| Because the games already out, such as Motorstorm and Resistance are on BD-ROM. I believe both run upwards of ~22Gb worth of data. |
Most developers just use the space but they don't actually need to. For example resistance was indeed 22GB but since it took too long to write the game to a Blue-Ray disk they just wrote a small NSTC to Pal converter for the videos so the game would be 16GB and it would take a fourth off the writing time.
For example GameCube only had 1.5GB storage, and they had big games too like Resident-Evil. Or the lord of the rings game then used DivX compression.
So i don't think that dvd's actually limit the game, in fact dvd drive is in average just a bit faster but is much faster towards the outer side of the disk. So developers can play with the data and punt regulary used data, like the enige and main character data on the outside.
But it is easy to see that if you make a game, how small it may be and you definitly want hours and hours of 1080p video material in multiple formats on the disk you wouldhave to wait for the next-gen disk format that could hold so much data. Because game data is actually cheap, video material isn't.
And most games come both to XBox and PS3, and since no-one actually can see the difference it probably doesn't matter.
