Most economic theory is good, but most theory salespeople are flogging a simplistic version of it. 'Pure' price theory demands perfect market information and zero costs to enter/exit the market - that's why it's easiest to study on extremely fungible commodities.
In real world markets economics considers elasticity, arbitrage, and distribution of market information between producers, wholesalers, retailers, buyers etc. But very little of that finds its way into op-eds or blogs aimed at a non-academic audience.
In real world markets economics considers elasticity, arbitrage, and distribution of market information between producers, wholesalers, retailers, buyers etc. But very little of that finds its way into op-eds or blogs aimed at a non-academic audience.