Haven't read the article. I'm responding to the OP's quoted figures...
This is one of those questions that can't really be answered until a couple of years down the line, where the benefits or lack thereof of BRD can be compared to DVD.
Historically, how did PS2 and XB games grow (or not) from launch size to later games? IIRC from talks on this forum, a lot of PS2 game launched on CD. So the real question is what are future games going to consume? DOA 4 is already over half-way the space of the disc. I don't see that it's safe to say games won't be going over 8.5GB. Well, it is safe to say that as developers will limit themselves to that much! They're not likely to produce an 11 GB game if they can avoid it. But looking at Nintendo GC, their games were mostly on 1.5 GB discs, so does that mean XB and PS2's extra capacity went unused?Condemned: 3.9 GB
Madden 06 NFL: 3.3 GB
Dead or Alive 4: 5 GB
NBA 06: 4.5 GB
This is one of those questions that can't really be answered until a couple of years down the line, where the benefits or lack thereof of BRD can be compared to DVD.