People often tell free market boosters that they worry about unencumbered businesses colluding to raise prices. As Dominic Armantano's excellent book "Antitrust and Monopoly" spells out, business owners compete to LOWER costs and costs of production because they will gain market share, and after they gain market share, the mere possibility that someone else might enter the market should they raise prices contrary to what consumers want -- well that keeps them striving to keep prices low and lower them all the time. When gubment gets involved, however, it's a different story...

Here is a great example. Milk in Louisiana:

http://www.foxnews.com/us/2013/01/27/louisiana-stops-sale-cheap-milk-at-...

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