Don Reisinger @ Cnet: "I'm not convinced that Blu-ray will ever be the success DVD is. I believe that the players are still too expensive, the media costs too much, and there isn't enough of a jump in quality between DVD and Blu-ray to force people to jump to the new format. Plus, streaming video is slowly but surely becoming a force in the entertainment space.
There's another issue holding Blu-ray back: it's not portable. Unlike DVD, you can't bring Blu-ray with you on-the-go. And you certainly can't run into Blockbuster, pick up a Blu-ray movie, and play it in your car to keep the kids quiet on a road trip. That's been a contributing factor to DVD's staying power.