Articles like this always make me wonder about how collectors preserve electronics for the ages. Will this cartridge still be in top condition in 50 years, or will it be a pile of rusty parts?
At least with video games, it can all be emulated and will never die. The physical cartridge is but a mortal shell...
That requires sufficient interest for people to come up with a perfect emulator for the system before the original hardware becomes too inconvenient to use for reference. And that can take a while - Dolphin only just became able to run all GC games a few months ago, for example, and it still has inaccuracies.
I mean more from the actual collectors standpoint. Some of these folks treat these items like works of art, so the physical package has real world value.
Electronics from the 50s and 60s still can be used. You need to be gentle when powering them on to ensure the capacitors haven't reversed. My trick is to use a light bulb in series to the AC input to drop the voltage. As long as there doesn't appear to be a short, I keep swapping different wattage bulbs until it's running directly off the wall.
I chuckled pretty good when I found out the couple lives in Gastonia and found the game not far from there. I can vouch that you can find some obscure but amazing used NES games in that area. Spent an entire summer in high school doing that (for fun though, not profit).