But, at first glance, I see several residents of Collinwood (perhaps from an alternate universe). ...unidentified family member...
Personally, I wouldn't be surprised if the first-generation DVD format doesn't go the way of vinyl LPs in the not all that far distant future. It's also up in the air as to whether or not MPI would upgrade/rerelease the DS episodes on whichever one of the two second-generation formats comes out on top. So, it could be doubtful that MPI would continue producing DS DVDs in their first-generation DVD format for decades to come once the second-generation DVD format takes hold (like VHS killed Beta when it came to videotape). It's possible that we'll see the availability of the DS DVDs in their present form for another decade - certainly on sites like eBay. But, unless MPI does indeed rerelease some sort of upgraded sets, to expect the current sets to be around for decades on sites like Amazon or Deep Discount is probably wishful thinking.
I hope to eventually have the entire DS series on DVD, but so far have only been able to purchase a few of the sets (usually when here's a sale).
Video technology has changed extremely rapidly in recent years. There are already two completely different second-generation DVD technologies available as it is (HD DVD and Blu-ray).
it appears likely that Blu-Ray players WILL be able to play older tech stuff (i.e. the older recensions of DVDs).
It will be interesting to see what develops from this point on, and whether the Industry will be able to coax consumers down yet another yellow-brick road of upgrading any and all movies and shows they own to the new format. I'm not holding my breath.
I can see the same thing happening with Blu-Ray. Most people (myself included) are perfectly happy with standard DVD's. There's no huge jump in quality like there was between VHS and DVD.