Product switching, market power and distance to core competency
R. Monin and
M. Suarez Castillo
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R. Monin: Insee
M. Suarez Castillo: Insee - Crest
Documents de Travail de l'Insee - INSEE Working Papers from Institut National de la Statistique et des Etudes Economiques
Within-firm product switching is recognised as an important source of growth. We examine how portfolio dynamics is related to product market power, product efficiency and within-firm differentiation. We derive perproduct markup and marginal cost following De Loecker et al. (2016) on a large panel of French manufacturers over 2009-2017 and build three novel measures of product similarity. We find that selection based on performance is a leading driver of the performance gap between entrant and incumbent products. Markups are as important as marginal costs in explaining selection patterns. Our results suggest that firms renew their portfolio using trial and error and select the best performing products, closer to their core competency. However at the firm level, most of markup growth is accounted for by a reallocation toward best performing products, with a minor role for product entry and exit in the short run.
Keywords: Multiproduct firms; Product dynamics; Product portfolio; Markups (search for similar items in EconPapers)
JEL-codes: D2 D4 L1 (search for similar items in EconPapers)
New Economics Papers: this item is included in nep-bec, nep-com and nep-ind
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Persistent link: https://EconPapers.repec.org/RePEc:nse:doctra:g2020-06
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