State imposed food price controls when the State is controlled by an entrenched kleptoarchy, as in most of the developing world, carries the danger of only being another source of profit for the kleptoarchy.  They could use the regulations to buy from the peasant farmers at an imposed low price and sell at a less than global market but still high price to the urban consumer.  

Or they could use the crises to steal, at gunpoint, the food from the peasant farmer to deliver, at a price, to the urban consumer.

She believed in nothing; only her skepticism kept her from being an atheist. -- Jean-Paul Sartre