January 25th, 2012 
Inside economics, a market that runs under laissez-faire policies is really a free market. It is “free” within the sense that the us government makes no try to intervene through fees, subsidies, minimum wages, price ceilings, etc. Market prices might be distorted by a seller or vendors with monopoly energy, or a purchaser with monopsony energy. Such price distortions might have an adverse impact on market participant’s welfare and reduce the efficiency of industry outcomes. Also, the relative degree of organization and negotiating power of purchasers and sellers significantly affects the functioning with the market. Markets where price negotiations meet stability though still do not arrive at desired outcomes for both sides are thought to experience market disappointment.
Markets are a system, and systems have structure. System works fine when the structure of a system is in good shape. Structure of a (utopistically) well-functioning marketplaces is defined theoretically of perfect competitors. Well-functioning markets of a real world are never perfect, but basic structural characteristics could be approximated for real-world markets, for example
many small purchasers and sellers
buyers and vendors have equal use of information
products are equivalent
Buying and selling in well-structured markets creates a cost that satisfies both buyers and vendors, not buying as well as selling alone as the free market proponents tells us. For example, trade unions are now and again accused of spoiling industry mechanims of a labour markets, in reality it is the opposite: blue collar trade unions make the customer and seller more equally powerful if they negotiate the price to get a working hour. When the purchaser and seller are usually equally powerful, then the price to get a commodity is appropriate to both events.
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