Don't forget sugar tariffs. If the sugar lobby was not in bed with the corn lobby to keep cheap caribbean and south american sugar out of the US market the price advantage enjoyed by HFCS would not be a significant factor. [For the record, there are reasons other than enhancing sweetness to use HFCS but if sugar costs were close to parity with HFCS it would fall from the second or third ingredient in many processed foods down towards the bottom of the list doewn near "natural and artificial flavorings", etc.]