If the free market is so great, how can commodities prices have little to do with their real supply/demand?

Question

And why can't governments do squat?

Answer 1

Who says that commodities prices have nothing to do with supply and demand? The current problem is that a lot of demand comes from speculators who drive up the price, until they unwind their positions.

What do you want govts to do? Most of these transactions are anonymous.