Xeshra: Besides, sure, in theory Nintendo DS games are now "out of their practical lifetime, because they are not being sold anymore, and if so... only by using some Nintendo store emulators". On top of that... the games stored on a Nintendo DS card may not life much longer than 10-15 years, up to 20 years if very lucky (no warranty there!). Even the manufacturer of those cards never said that it will last above 20 years and it seems this is already the most upper limit.
So, those gamers owning such cards may soon (or already) completely lose their games. The only solution for them is to "get" or "make" a backup (which means the copyright or DRM will have to be circumvented) and they even may need other parts of the DS such as its firmware in order to even play this backup (no matter on the original console or by using a emulator).
So, just to say... if those gamers want to "keep" their games for above 10 years... they are doomed without going a, by the current rights situation, very "gray path". It sucks but this is the harsh reality!
Just to reply to this bit...
I don't know anything about the DS or how its games are stored; I've never had one. However, I have had an NES, SNES, and N64 since they were new; all of which feature games on cartridges. The "conventional wisdom" has always been that they will only last so long before they deteriorate and no longer work, and while that may be true, so far I have yet to see it happen.
Every game I own on those consoles still worked just fine the last time I played them, and some of them (for the NES) are nearly 40 years old now. In one case for the SNES, the battery-backed-up memory for saved games was only intended to last five to ten years, but the game is over 30 years old and even
THAT still works.
I've had more trouble with the consoles themselves than with the games; though I still have my original SNES and N64 and both still work, I did have to replace the NES years ago.
This is why I have such problems with the modern movement to seemingly make everything have a designed lifespan or turn it into a pay service, and why GOG is the only online game store I have ever bought from to this point. If I pay for a product from a company, I am
vehemently against that company having the ability to prevent me from using it anymore. And though I know it makes me something of a dinosaur these days, it's why I still prefer DVD/Bluray over streaming; with DVDs I am not subject to the whims of the corporate idiots who routinely yank programming offline if it's not popular enough, or if there's a licensing change. Yes, I am potentially limited by the expected lifespan of the media or the machines that play them, but thus far I haven't run into that issue, and I HAVE seen numerous cases of people I know losing access to programming they were paying a streaming service for because the service took it offline for one reason or another.
There are some parts of modern life that I am very grateful I'm around to witness; this "pay to play" mentality that seems to be taking over the entire corporate world is NOT one of them.