Why Blu-ray still needs a killer app to succeed

Blu-ray may have already won over certain switched-on consumers - movie enthusiasts and some gamers - but for it to become truly mass market and to enjoy DVD-like sales of hardware and software it needs a killer app.

The movie industry is doing its bit by offering Blu-ray/DVD and Digital Copy combi packs - Disney Pixar's Up being one example - but that already hints at what maybe Blu-ray's fundamental problem.