My guess: 1) Lower cost for drives (commodity drives). 2) The ability to (easily) seek to an arbitrary location on disk 3) Cost of BD burners are <$100; Cost pe

My guess: 1) Lower cost for drives (commodity drives). 2) The ability to (easily) seek to an arbitrary location on disk 3) Cost of BD burners are <$100; Cost per GB of disks is $0.025/GB. LTO-6 drives are $1000+, and cost per GB is around $0.012/GB. -- I think the cost works out actually, especially as the cost of blu-ray is still falling.