Ah, but that wasn’t what was disputed. Certainly, the effects of fan translations on subsequent sales of legitimately licensed product can be debated. However, even there, I have other evidence: at ACen one year an industry spokesman told me that they noticed a very curious effect for Nuku Nuku: After the legit release passed up the fansubbed releases, sales went up. They actually sold more copies of the last few volumes than they did of the first one. He then explained that this hardly ever happens, because people will get the first volume to see if they like something, then decide they don’t and drop it - FAR more frequently than they will jump into a series right before the end.
But that wasn’t the question. What was disputed was the idea that it would happen at all:
Prove to me that fan-made patches lead to notable rises in piracy. I’ll wait here.
So I provided evidence that it, in fact, has already happened. Moving the goalposts isn’t fair