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The distinction between employment and sellers markets is that an employee typically has a (mostly) exclusive relationship with a single employer, and relatively high switching costs (interviews, unemployment), particularly for more advanced / skilled professions. A buyer usually has very low switching costs between merchants. That said, yes, there is a great deal of concentration in retail, especially as you go back up the supply chain. For electronics and other advanced goods, there is typically one or a very small set of manufacturers (at least at the component, if not the finished product scale), e.g.: Foxconn for laptops and mobile devices, a handful of disk drive and memory manufacturers, etc. For food, there's a huge level of concentration at the mid-market, through Monsanto, Tyson, Cargil, Con-Agra, etc., despite the huge number of individual food outlets. While I don't claim that all markets are oligopolies/oligopsonies, a great many are (or exhibit a great deal of concentration, or of market distortions such as healthcare) including many of those comprising a large share of the US economy: health, finance and insurance, utilities, retail. Enough so that what we consider to be the conditions of a free market: economically small buyers and sellers with equivalent information and low switching costs meeting in an open marketplace, are actually met in only a small portion of the economy as a whole. |