Paul Sweeting's article on ContentAgenda is worth a read. The royalty stack for Blu-ray and implementation issues, especially on laptops where battery life is critical, seem to have pushed Apple away from Blu-ray and toward iTunes High Def downloads.
Between the new intellectual property in the physical format, BD-Java, AACS and BD+, the royalty stack involved in Blu-ray presents a serious challenge to device makers, especially those whose core business is not making disc players....
Blu-ray is also not that easy to implement in a laptop. The drive itself requires more energy to operate than a DVD drive, draining battery power, and the extra processing involved in decrypting Blu-ray and running BD-Java eats up CPU cycles, which also drains power.
