Technology, market structure and the gains from trade

Impullitti, Giammario, Licandro, Omar and Rendhal, Pontus (2018) Technology, market structure and the gains from trade. CEP Discussion Papers (CEPDP1587). London School of Economics and Political Science. Centre for Economic Performance, London, UK.

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Abstract

We study the gains from trade in a new model with oligopolistic competition, firm heterogeneity, and innovation. Lowering trade costs reduces markups on domestic sales but increases markups on export sales, as firms do not pass the entire reduction in trade costs onto foreign consumers. Trade liberalisation can also reduce the number of firms competing in each market, thereby increasing markups on both domestic and export sales. For the majority of exporters, however, the pro- competitive effect prevails and their average markups decline. The incomplete pass-though and the reduction in the number of competitors instead dominate for top-exporters – the top 0.1% of firms – which end up increasing their markup. In a quantitative exercise we find that the aggregate effect of trade-induced markup changes is pro-competitive and accounts for the majority of the welfare gains from trade. Trade-induced changes in competition affect survival on domestic and export markets and firms’ decision to innovate. All exporters, and especially the top exporters, increase their market size after liberalisation which, in turn, encourages them to innovate more. Hence, top exporters contribute negatively to welfare gains by increasing their markups but positively by increasing innovation and productivity. Firms’ innovation response accounts for a small but non-negligible share of the welfare gains while the contribution of selection is U-shaped, being negative for small liberalisations and positive otherwise. A more globalised economy is therefore populated by larger, fewer and more innovative firms, each feature representing an important source of the gains from trade.

Item Type:	Monograph (Discussion Paper)
Official URL:	http://cep.lse.ac.uk/
Additional Information:	© 2018 The Authors
Divisions:	Centre for Economic Performance
Subjects:	H Social Sciences > H Social Sciences (General) H Social Sciences > HB Economic Theory H Social Sciences > HF Commerce
JEL classification:	F - International Economics > F1 - Trade > F12 - Models of Trade with Imperfect Competition and Scale Economies F - International Economics > F1 - Trade > F13 - Commercial Policy; Protection; Promotion; Trade Negotiations; International Trade Organizations O - Economic Development, Technological Change, and Growth > O3 - Technological Change; Research and Development > O31 - Innovation and Invention: Processes and Incentives O - Economic Development, Technological Change, and Growth > O4 - Economic Growth and Aggregate Productivity > O41 - One, Two, and Multisector Growth Models
Date Deposited:	11 Jan 2019 14:37
Last Modified:	13 Sep 2024 20:42
Funders:	Economic and Social Research Council
URI:	http://eprints.lse.ac.uk/id/eprint/91710

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