Input-output linkages and optimal product diversity
We derive a simple necessary and sufficient condition on preferences for the market outcome to be socially optimal under monopolistic competition with input-output (IO) linkages. Preferences that satisfy this condition are typically non-CES and display pro-competitive effects, although they converge to the CES when IO linkages become negligibly weak. We show that the equilibrium with pro-competitive effects may deliver both excessive and insufficient entry of firms in equilibrium.
Research target: Economics and Management
Priority areas: economics
, Economics Letters 2017 Vol. 158 P. 58-61
We derive a simple necessary and sufficient condition on preferences for the market outcome to be socially optimal under monopolistic competition with input-output (IO) linkages. Preferences that satisfy this condition are typically non-CES and display pro-competitive effects, although they converge to the CES when IO linkages become negligibly weak. We show that the equilibrium with ...
Added: June 17, 2017
, , Journal of International Economics 2012 No. 87 P. 1-17
We present a general equilibrium model of monopolistic competition featuring pro-competitive effects and a competitive limit, and investigate the impact of trade on welfare and efficiency. Contrary to the constant elasticity case, in which all gains from trade are due to product diversity, our model allows for a welfare decomposition between gains from product diversity ...
Added: November 23, 2013
, Competition, Land Prices, and City Size / . 2019. No. 7727.
Larger cities typically give rise to two opposite effects: tougher competition among firms and higher production costs. Using an urban model with substitutability of production factors and pro-competitive effects, I study the response of the market outcome to city size, land-use regulations, and commuting costs. For industries with low input shares of land, larger cities ...
Added: July 16, 2019
, , et al., Экономический журнал Высшей школы экономики 2015 Т. 19 № 2 С. 218-248
This paper studies how heterogeneous individuals, that differ by entrepreneurial skills and productivity as a worker, endogenously choose their occupation (workers vs. entrepreneurs) based on expected income comparison (wages vs. profits). Each entrepreneur runs a firm that produces a single variety of a horizontally differentiated good under monopolistic competition. We show that the cutoff for occupational selection between workers ...
Added: June 16, 2015
, Общественные науки и современность 2021 № 1 С. 63-72
Patterns for competitive and monopoly behaviour, market power configurations and instruments of interfirm relationships are under radical transformation in a digital era. There arise new forms of monopolistic strategies that aim at establishing, strengthening and withstanding long-term market power in various industries. Analysis of Russian and foreign economic investigations that was done in the article ...
Added: March 20, 2021
, , et al., Painful Birth of Trade Under Classical Monopolistic Competition / Высшая школа экономики. Series WP BRP "Economics/EC". 2016. No. 132.
In the standard Krugman (1979) non-CES trade model, several asymmetric countries typically lose from increasing trade costs. However, all countries transiently benefit from such increase at the moment of closing trade, under almost-prohibitive trade costs (i.e., near autarky, which is possible only under non-CES preferences). In other words, during trade liberalization the first step from ...
Added: October 23, 2016
, , , Journal of Regional Science 2020 Vol. 60 No. 1 P. 88-128
We document the geographic concentration patterns of Russian manufacturing using detailed microgeographic data. About 80% of three‐digit industries are significantly agglomerated, and a similar share of three‐digit industry pairs is significantly coagglomerated. Industry pairs with stronger buyer–supplier links—as measured using Russian input–output tables—tend to be slightly more coagglomerated. This result is robust to instrumental variable ...
Added: April 10, 2019
, , Пространственная экономика 2014 № 3 С. 12-25
The article deals with the theory of monopolistic competition under demand uncertainty. The authors consider the economy with labor immobility consisting of the high-tech sector with monopolistic competition and the standard sector with perfect competition. Preferences between sectors are specified by the Cobb – Douglas production function. It is assumed that companies make output decisions under ...
Added: January 16, 2015
, , et al., International Journal of Economic Theory 2017 Vol. 167 No. 1 P. 86-115
This paper compares the market equilibria in a differentiated industry under Cournot, Bertrand, and monopolistic competition. This is accomplished in a one-sector economy where consumers are endowed with separable preferences. When firms are free to enter the market, monopolistically competitive firms charge lower prices than oligopolistic firms, while the mass of varieties provided by the ...
Added: March 29, 2017
, , HSE Economic Journal 2015 Vol. 19 No. 3 P. 386-394
We consider standard monopolistic competition models in the spirit of Dixit and Stiglitz or Melitz with aggregate consumer's preferences defined by two well known classes of utility functions – the implicitly defined Kimball utility function and the variable elasticity of substitution utility function. These two classes gene ralize classical constant elasticity of substitution utility function and overcome its lack of ...
Added: October 18, 2015
, , On The Social Efficiency In Monopolistic Competition Models / Высшая школа экономики. Series WP BRP "Economics/EC". 2014. No. WP BRP 80/EC/2014 .
We consider standard monopolistic competition models with aggregate consumer's preferences defined by two well-known classes of utility functions | the Kimball utility function and the variable elasticity of substitution utility function. It is known that market equilibrium is efficient only for the special case when utility function has a constant elasticity of substitution, but ...
Added: December 4, 2014
, , et al., Quarterly Journal of Economics 2020 Vol. 135 No. 4 P. 2299-2360
Equilibria and optima generally differ in imperfectly competitive markets. Although this is well understood theoretically, it is unclear how large the welfare distortions are in the aggregate economy. Do they matter quantitatively? To answer this question, we develop a multisector monopolistic competition model with endogenous firm entry and selection, productivity, and markups. Using French and ...
Added: November 3, 2020
, , Advances in Systems Science and Applications 2020 Vol. 20 No. 2 P. 119-130
We present a natural generalization of the Dixit-Stiglitz monopolistic competition model (DSM) — we assume that there is a continuum of industries, each of them described as in DSM, and each characterized with its own elasticity of substitution. Although firms in all industries share the same level of productivity and costs, exogenous technological progress leads ...
Added: December 8, 2020
Распределение предпринимательских способностей и миграция: структура занятости, неравенство доходов и благосостояние
, , Журнал Новой экономической ассоциации 2015 № 2 С. 36-62
We define a general equilibrium model with heterogeneous individuals who are endowed by identical preferences, given by utility function with constant elasticity of substitution (CES), and by heterogeneous entrepreneurial skills. We find that scale effects linked to migration are tractable in the framework of the constructed model because the migration changes the market size together ...
Added: November 13, 2014
, , Heterogeneous consumers and market structure in a monopolistically competitive setting / EERC. Series "Labor markets and social policy". 2015. No. 15/03E.
The present paper extends the traditional Dixit and Stiglitz set-up by introducing consumers’ workers’ heterogeneity into a general equilibrium model of monopolistic competition. The model obtains a closed-form solution for a symmetric equilibrium and shows how the market outcome depends on the joint distribution of consumers’/workers’ taste and labor productivities. In contrast to the traditional ...
Added: March 8, 2016
, Spatial Economic Analysis 2018 Vol. 13 No. 4 P. 387-399
We develop an economic geography framework with positive trade costs in both manufacturing and traditional sectors, mobile skilled workers, and unequal shares of unskilled labour in regions. We show that partial agglomeration always features the home market effect (HME) regardless of whether regions trade only the manufacturing good or both. Moreover, spatial factor mobility is ...
Added: July 3, 2018
, , , Intersectoral Markup Divergence / CESifo Group Munich. Series "CESifo working paper". 2018. No. WP6965.
We develop a general equilibrium model of monopolistic competition with a traded and a nontraded sector. Using a broad class of homothetic preferences—that generate variable markups, display a simple behavior of their elasticity of substitution, and nest the ces as a limiting case— we show that trade liberalization: (i) reduces domestic markups and increases imported ...
Added: April 26, 2018
, Competition, Land Price, and City Size / . 2018. No. 190/EC/2018.
Larger cities typically give rise to two effects working in opposite directions: tougher competition among firms and higher production costs. Using an urban model with substitutability of production factors and pro-competitive effects, we study how market outcome responds to city population size, land-use regulation and commuting costs. For industries with small input of land, larger ...
Added: April 26, 2018
, , The Scandinavian Journal of Economics 2019 Vol. 121 No. 3 P. 1244-1269
Standard measures of competitive toughness fail to capture the fact that, as consumers optimize intertemporally, firms operating today compete with (yet non-existent) businesses which will be started tomorrow. We develop a two-tier CES model of dynamic monopolistic competition in which the impact of product differentiation on the market outcome depends crucially on the elasticity of ...
Added: January 9, 2018
, Journal of Economic Geography 2020 Vol. 20 No. 6 P. 1313-1329
Larger cities typically give rise to two opposite effects: tougher competition among firms and higher production costs. Using an urban model with substitutability of production factors and pro-competitive effects, I study product market responses to an increase in city population, land-use regulations, and commuting costs. I show that those responses depend on the land intensity ...
Added: November 5, 2019
Модель монополистической конкуренции: влияние технологического прогресса на равновесие и общественную оптимальность
, , Математическая теория игр и ее приложения 2014 Т. 6 № 2 С. 3-31
We consider a monopolistic competition model with endogenous choice of technology in the closed economy case. The aim is to make comparative statistics of equilibrium and social optimal solutions with respect to "technological innovation"; parameter which influences on costs. Key findings: with the growth of innovation and investment in the production increase; behavior of the ...
Added: October 18, 2014
, , , Journal of Regional Science 2018 Vol. 58 No. 1 P. 38-62
We develop a monopolistic competition model with heterogeneous agents who self-select into occupations (entrepreneurs and workers) depending on innate ability. The effect of market size on the equilibrium occupational structure crucially hinges on properties of the lower tier utility function—its scale elasticity and relative love for-variety.When combined with the underlying ability distribution, the share of ...
Added: January 12, 2018
, , , Automation and Remote Control 2014 Vol. 75 No. 8 P. 1503-1524
In Russia, chain stores have achieved considerable market power. In this work, we combine a Dixit–Stiglitz industry model with a monopolistic retailer in order to address the following questions: does the retailer always impair prices, variety of goods, and ultimately welfare? Which market structure is worse: Nash or Stackelberg? What should be the public policy in this area? ...
Added: October 18, 2014
, , , Journal of Economic Theory 2017 Vol. 167 No. 1 P. 86-115
We propose a general model of monopolistic competition, which encompasses existing models while being flexible enough to take into account new demand and competition features. Even though preferences need not be additive and/or homothetic, the market outcome is still driven by the sole variable elasticity of substitution. We impose elementary conditions on this function to ...
Added: January 14, 2017