avphile, i believe that DVDs would eventually become a thing of the past. but its collectibility depends on markets and cultural perception. i have been participating in other forums where LD's of Star Wars, Nightmare Before Xmas, Lion King, and other films are sought after and being revered as ultimate releases. also, VHS tapes of godfather, titanic and red dragon are collectibles because of additional film stuff not found in the present releases.
re OOPs and other collectible releases, it is only in the Philippines that these DVDs are not purchased at real time market value. maybe because of lack of knowledge or a pending uneducated purchase is proved to be difficult to resist. whatever the reason is, the Filipino market customizes its taste, value derivation and perceived truths according to economics and present (not future) significance in their lives.
dominant or not, DVDs with unique packagings would always have a place in history maybe not in our time but in the future. and these releases would definitely reap big bucks or value as technology progresses. now, DVDs in plain amaray cases.. im not so sure.