Dynamics of Markups, Concentration, and Product Span
نویسندگان
چکیده
We develop a model with finite number of multiproduct firms together continuum single-product and study the dynamics that arise from product innovation. Consistent available evidence, predicts rising markups concentration declining labor share. Our predict possibility an inverted-U relationship between productivity span, for which we provide suggestive evidence. In optimal allocation, span are strictly positively related. also characterize policies these types sectors. (JEL D21, D33, D43, J24, O31)
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ژورنال
عنوان ژورنال: American Economic Journal: Macroeconomics
سال: 2022
ISSN: ['1945-7707', '1945-7715']
DOI: https://doi.org/10.1257/mac.20200378