The limits of DVD will soon be exhausted? That's not even close to true, in fact, that's still at least a few years down the line from being true. But, here it is, the solution to the limit of space available on DVD's... drumrolll please!!!!!!!!!
Put the game on two DVD's! I know, I know, it's an insane concept, what with every pc game in the last decade using multiple cd's and numerous games on the playstation coming in on multiple cd's. It would be absolutely crazy for developers to put there games on two dvd's. *Ends sarcasm.
Sony has completely misinformed the public about the space advantages to Blu-Ray disks. Do you have any idea how much it is going to cost a developer to produce a game that actually fills the whole 50gigs provided for by Blu-Ray? I don't, but you'd better believe that it is, and will continue to be, prohibitively expensive for some time coming.
Sony has repeatedly stated that the PS3 is supposed to be able to last over two generations. In other words, they intend their PS3 to not be supplanted by the PS4 until 2016. Perhaps in 3 to 5 years it will no longer be so cost prohibitive to actually produce games that use all 50gigs of space provided for by Blu-Ray. But, does anybody remember the lifespan of the original XBOX? Oh, right, it was 4 years. 2001-2005. So, in three (4 tops) years, we can safely assume that Microsoft will be releasing a new console (the 360's already been out a year). By that time this ridiculous format war will be over and Microsoft will be able to decide, based on the market, what technology they choose to have their games stored on.
Finally, there are new development technologies which allow the textures in video games (the largest space hog that exists in game developments) to be shrunk down dramatically, and then expanded in real time by the power of the XBOX360. Check out info on a game called "Roboblitz", an XBOX360 Arcade title which uses Unreal Engine 3 techonlogy, and the entire game fits into a 50 meg download. So even if developers view the dvd as too restricting within the next couple of years, there are tools that are available, right now, to rectifiy that problem. Of course, this post is so off forum that it should probably be deleted immediately, so we'll see if anybody actually gets the opp. to read it.