Hmmmm.... The gov't has done nothing at this point, yet someone discovered there were fake foods, shared the information and consumers are now aware and avoiding them.
Well, how much is a kid really worth? Sure, if it's your kid, a ton, but really it's like a decade or two before we even start evaluating potential. Losing 10-30% probably isn't that big of a deal.
There are a few influential thinkers who talked about this in the past, Jonathan swift is worth looking into.
So yeah, I'd say the free markets are working.