Food activists on the Left often point to the use of High Fructose Corn Syrup (HFCS) as one of those failures of capitalism, where rapacious capitalists make money serving an inferior product. But HFCS resulted from a scramble by food and beverage companies to find some reasonable alternative to sugar as the government has driven up sugar prices through a crazy tariff system that benefits just a tiny handful of Americans, and costs everyone else money
For the last 10 years or so, HFCS-42 has actually traded at a price higher than the world market price for sugur, but lower than the US price for sugar. There is a lot complexity to prices, but this seems to imply that HFCS would not be nearly as attractive a substitute for sugar if US sugar tariffs did not exist (not to mention subsidies of corn which support HFCS). This can also be seen in the fact that HFCS has not been used nearly so often as a sugar substitute in markets outside of the US, even by the same manufacturers (like Coke) that pioneered its use in the US.
President Obama used a lot of his state of the union address again teeing up what sounded to me like a new round of protectionism. Protectionism is the worst form of crony capitalism, generally benefiting a handful of producers and their employee to the detriment of 300 million US consumers and any number of companies that use the protected product as an input.