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Zaouras, Michalis (2012) Essays on market structure and competition. PhD thesis, University of Warwick.
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Official URL: http://webcat.warwick.ac.uk/record=b2684623~S1
Abstract
My thesis consists of two relatively independent topics. In the first topic I empirically inves-
tigate the factors that determine the presence of the independent coffee shops in the market
of Central London. In the second topic I present a theory of cartel detection. The common
feature of these topics is that I investigate the demand side effects on market structure and
its impact on competition.
To be more specific, in the first topic I build a simple theoretical model of product
differentiation in adjacent markets, based on Mazzeo (2002). For the empirical estimation I
have constructed a unique dataset of coffee shops in Central London. I further manage to
identify differences on demand characteristics across markets by utilizing data on people’s mo-
bility from the tube stations and provide evidence for the existence of product differentiation.
It is found that residential areas with high employment, areas with small business density
and leisure areas increase the profitability of the independent coffee shops. A counterfactual
analysis is also presented.
In the second topic I investigate the cartel’s strategies and likelihood of collusion when
the buyers of the cartel are able to report its existence to the anti-trust authority. I char-
acterize the cartel’s optimal behavior when the buyers are actively monitoring the cartel’s
members and are able to report a cartel to an anti-trust authority1. I present a simple static
model and I show that the likelihood of collusion increases as the willingness of the buyers to
report increases (cost of reporting decreases). Furthermore, it is shown that it is optimal for
an anti-trust authority to decrease the cost of reporting (a trade-off between price reductions
in existing cartels and increased likelihood of cartel formation is identified). Finally, alterna-
tive cartel strategies are also explored in this topic. As for the last point, I show that the
threat of exclusion (foreclosure) and price discrimination are robust strategies that prevent buyers from reporting.
Item Type: | Thesis (PhD) | ||||
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Subjects: | H Social Sciences > HB Economic Theory H Social Sciences > HD Industries. Land use. Labor K Law [LC] > K Law (General) |
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Library of Congress Subject Headings (LCSH): | Industrial organization (Economic theory), Competition, Cartels, Restraint of trade, Antitrust law | ||||
Official Date: | November 2012 | ||||
Dates: |
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Institution: | University of Warwick | ||||
Theses Department: | Department of Economics | ||||
Thesis Type: | PhD | ||||
Publication Status: | Unpublished | ||||
Supervisor(s)/Advisor: | Ireland, Norman; Waterson, Michael, 1950- | ||||
Extent: | xiii, 198 leaves : illustrations. | ||||
Language: | eng |
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