EDIT
I'm not bashing Nintendo's IP rights, just the notion that ROMS are inherently illegal/immoral.
I'm not taking a side, just saying it's debatable for sure.
Edit: downvotes aplenty, perhaps someone could tell me how I could play two player Double Dragon 2 legally until this device came out?
But more generally, the person who started this thread appeared to be suggesting emulation as an alternative to this device. So in context, your comment reads as meaning, "Even though this device is out now, it's still OK to download the games illegally rather than pay for them because there wasn't a legal avenue to get the games before this device came out," which doesn't make very much sense unless you're just looking to punish Nintendo or something.
It's been ten years since I tried to play Double Dragon 2, the landscape has clearly changed lots more than it did in the fifteen since the console went out of fashion.