Market power analysis in the retail food industry: a survey of methods
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The present paper surveys various methods used to analyse market power in the
retail food industry. The strengths and weaknesses of these approaches are explored
and a review of the issues in using New Empirical Industrial Organization (NEIO)
and time-series models is provided. The absence of a theory underlying time-series
models is highlighted and a review of some theoretical models in retailing is
presented. The impact of imperfect competition in the food processing sector on
retailing is also examined. It is argued that a combination of the approaches that
minimises the weaknesses and builds on the strengths of single approaches may
prove more promising for examining non-competitive behaviour.