Counterfeiters counterfeit the medium, not the information. It's mostly harmless to consumers in cases where it's the information that matters (books, digital content). It's harmful when the physical medium is the product.

Elsewhere in the discussion, 'erentz says:

> I see the Amazon fake products problem as related to the social network fake news problem.

I think they're right in more than one way. It's not only the platform vs. publisher issue. Fake news are the information goods equivalent of counterfeiting - faking the bits, not the medium.