But do any of you and I mean ANY OF YOU go up to the countless dealers selling repros at game conventions and give them any sort of shit at all about selling stuff that doesn't belong to them? Do you ask them if they procured permission to use the particular English patch they're using?
Actually yes. I've only been to one "game" convention -- never seen repros being sold by the videogame dealers at anime conventions -- and I saw a dude selling some NES ROMs. The way they were presented was as though the dealer was responsible for creating the repro's*, so I got belligerent right to his face.
He thought I was an ass and he was clearly upset. That pleased me.
* If someone just happens to be selling a repro that they bought from someone else, I wouldn't give them a hard time. But when someone appears to be taking responsibility for the product existing, they had damn well better be responsible for the product existing.
EDIT: Also, I can personally vouch for the effectiveness of the upfront disclaimers. I once bought an anime bootleg in my youth from the local comic shop, saw the disclaimer, and that opened my eyes to what was really going on. Whether or not it's removable is irrelevant -- it's an easy inclusion that harms no one except the profiteer.