Damned analysts never actually ask anyone for a real opinion...
I'll tell you why it's not taking off plain and simple, it's the same reason DVDs in PCs lagged: writers are WAY too expensive, and media is scarce and even MORE expensive, and as yet, copying a BD to a BD-R is nowhere near cost effective, has compatability issues with players, and is still illegal. We're waiting for legal copying in the next release of the blueray firmware, PC based writers to drop to below the $100 mark, and for disks to drop to the $2 mark or lower... Also, some software to make writing a BRD easy needs to come along.
In 6-12 months, hardware prices should be in line, disk prices may get close to $1.50 each per 100 disks, and we'll see (hopefully) an answer to the legal copying debate. Then these things will fly off shelves.