Do you have a source for this? All the data I've seen shows piracy really doesn't impact content creators in a meaningful way.
... the study concluded that there was no evidence that piracy affects copyrighted sales, and in the case of video games, might actually help them. [1]
Curious why you think this applies to the NDS but not in general.[1] https://www.engadget.com/2017-09-22-eu-suppressed-study-pira...