On the Measurement of Market Share Mobility and Entry
Static concentration measures neglect dynamic changes in market structure entirely, yet the expectation of lost market share, based on the past and current mobility of market shares in an industry, may be an important part of the competitive forces acting on the firm and affecting its behaviour. This note draws out the similarity between market share and new entry and proposes new, linked measures of both, enabling these additional dimensions of market structure to be incorporated in empirical work.
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|Date of creation:||1983|
|Date of revision:|
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