Good Will Hunting was released on DVD in '98 and it was the 1st DVD that my 1st generation player couldn't read, but 1 disc out of hundreds didn't force an upgrade so my 1st generation player wasn't replaced until Christmas of '99.
My 2nd DVD player upgrade came in '02. The original releases of Bedazzled & Planet of the Apes were both Nuon enhanced DVDs. Nuon enchanced DVDs didn't force an upgrade, but I just had to play Tempest 3000.
It's not only hardware that has needed to be upgraded over DVD's decade long run. Last month I repurchased Stargate because my 1st generation disc is double-sided single-layer which means I had to flip the disc half way through, a pain in the a** that DVD's dual-layer evolution resolved. I also repurchased Waterworld because the DVD-ROM in my Mac couldn't read the 1st generation disc for some reason.
Super DVD would require a player upgrade just like previous iterations of DVD, but most of those could again be made via attrition. Blu-ray also requires a player upgrade. IMO the viability of Super DVD would come down to cost & consumer reluctance to let go of DVD. If support for Super DVD can be added to DVD players without increasing the cost of players or discs Blu-ray could quickly be history.
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