> One empirical demonstration of piracy's impact on sales (<https://en.wikipedia.org/wiki/Copyright_infringement#Softwar...>):

That's not a demonstration, that can be explained by the difference in hardware penetration, the quality of service provided which was much higher on consoles at the time, pricing, market differences or other factors. You had plenty of counterfeited/bootleg cartridges as well on the famicom.

I'm sure we can find more than one story from the 80s if that's really a thing.