the difference between DVD and Video Cassettes (VCR) was more significant than the difference between HD/BlueRay/HDDVD and current Video/DVD, no? less incentive. the die-hards will buy the new technology in any case, but for the majority of the people there will be little reason to buy the new technology, till it comes down significantly in price.
(i don't think the extra features, "interactive" stuff etc., will be that much of an attraction).
One Ring to rule them all, One Ring to find them,
One Ring to bring them all and in the darkness bind them
In the land of Mordor, where the Shadows lie
M.C. Escher - Reptilien