That's what he was asking. I think he meant "is this the only reason why we use high fructose corn syrup everywhere" to which I think the answer is "no." There's no shortage of corn subsidies, and farmers have been looking for new ways of utilizing corn for years. HFCS has been one of the ways which has payed off. Additionally, fructose is rated higher than sucrose on the Relative Sweetness Scale (140 and 100 respectively) so that less product may be used.

But yes, the above reason is vital.