just wandering, why doesn't the MacBook or the iMac come with a Blu-ray drive?

I'd love to get my hands on the 24in iMac (with the ATI GPU), but the fact that the Blu-ray drive is missing puts me off (yes, I am one of those people that watch hi-def anime alone on my computer screen).

and before someone says that the Macs are made for the internet watching pleasure, let us not forget that their are many who have slow internet connection and many more who can't buy digital movies because there is no one to sale it to them in their region.