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Measuring Market Concentration in the Aegean Ferry System


  • Alexander M. Goulielmos

    () (University of Piraeus, Department of Maritime Studies,Piraeus, Greece)

  • Giannis Sitzimis

    () (University of Piraeus, Department of Maritime Studies, Piraeus, Greece)


The paper calculates the concentration in 6 major routes of the ‘Greek ferry system’ (2001-2010), important not only for international tourism, including Cruises, but also for the cohesion of the Greek space with EU. Worth noting is the consolidation of companies that took place, where from 25 companies operated (prior of 1994) to 5 groups (by 2012). This was due to: (1) the abolition of ‘cabotage’ (i.e. the right to restrict coastal services to national-flagged ships) by EU. The relevant legislation passed in 1992 with a long transition period (1992-2004), and (2) the listing of ferry companies in Athens Stock Exchange. Frequent buy-outs increased the monopoly power of companies involved. The Greek ferry system was a par excellence state-regulated one since 1976, with State issuing licenses and determining fares, but failing to control quality. A measure of monopoly power was calculated, based on the work of Lerner, Herfindahl and Hirschman, known as the ‘Hirschman-Herfindahl Index’. After a brief examination of what is meant by ‘market’, we provided the values of HHI for the 6 routes: (1) Piraeus-Crete, (2) Piraeus-Chios-Mytilene, (3) Crete (Iraklion)-Piraeus, (4) Piraeus-Crete (Rethymno), (5) Piraeus-Dodecanese and (6) Piraeus-Cyclades. These show a distinct pattern of oligopoly/monopoly, with the traffic concentrated in a small group of companies. We argue that the number of ships of different companies in one route determines the market. Neither partial (2002) or full (2006) deregulation had any effect in increasing competition, as expected, with the temporal exception in one or two cases. Moreover, Greek authorities had not prepared properly for deregulation and as a result failed either to prevent monopolies or to create the effective antitrust regulation like in USA.

Suggested Citation

  • Alexander M. Goulielmos & Giannis Sitzimis, 2012. "Measuring Market Concentration in the Aegean Ferry System," SPOUDAI Journal of Economics and Business, SPOUDAI Journal of Economics and Business, University of Piraeus, vol. 62(1-2), pages 7-27, January -.
  • Handle: RePEc:spd:journl:v:62:y:2012:i:1-2:p:7-27

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    References listed on IDEAS

    1. Saving, Thomas R, 1970. "Concentration Ratios and the Degree of Monopoly," International Economic Review, Department of Economics, University of Pennsylvania and Osaka University Institute of Social and Economic Research Association, vol. 11(1), pages 139-146, February.
    2. Arnoud W. A. Boot & Anjan V. Thakor, 2000. "Can Relationship Banking Survive Competition?," Journal of Finance, American Finance Association, vol. 55(2), pages 679-713, April.
    3. Lijesen, Mark G., 2004. "Adjusting the Herfindahl index for close substitutes: an application to pricing in civil aviation," Transportation Research Part E: Logistics and Transportation Review, Elsevier, vol. 40(2), pages 123-134, March.
    4. Martin, Stephen, 2010. "Industrial Organization in Context," OUP Catalogue, Oxford University Press, number 9780199291199, June.
    5. Encaoua, David & Jacquemin, Alexis, 1980. "Degree of Monopoly, Indices of Concentration and Threat of Entry," International Economic Review, Department of Economics, University of Pennsylvania and Osaka University Institute of Social and Economic Research Association, vol. 21(1), pages 87-105, February.
    6. Mitchell A. Petersen & Raghuram G. Rajan, 1995. "The Effect of Credit Market Competition on Lending Relationships," The Quarterly Journal of Economics, Oxford University Press, vol. 110(2), pages 407-443.
    7. Daniel F. Spulber, 1989. "Regulation and Markets," MIT Press Books, The MIT Press, edition 1, volume 1, number 0262192756, July.
    8. Cowling, Keith & Waterson, Michael, 1976. "Price-Cost Margins and Market Structure," Economica, London School of Economics and Political Science, vol. 43(171), pages 267-274, August.
    9. Curry, B & George, K D, 1983. "Industrial Concentration: A Survey," Journal of Industrial Economics, Wiley Blackwell, vol. 31(3), pages 203-255, March.
    10. Jean Tirole, 1988. "The Theory of Industrial Organization," MIT Press Books, The MIT Press, edition 1, volume 1, number 0262200716, July.
    11. A. P. Lerner, 1934. "The Concept of Monopoly and the Measurement of Monopoly Power," Review of Economic Studies, Oxford University Press, vol. 1(3), pages 157-175.
    12. Konstantinos Mattas & C. Ciobanu & Demetrios Psaltopoulos, 2010. "Prospects of Changes in Regional Economic Structures since EU Accession," South-Eastern Europe Journal of Economics, Association of Economic Universities of South and Eastern Europe and the Black Sea Region, vol. 8(1), pages 55-72.
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    More about this item


    Concentration; Greek ferry system; the ‘Hirschman-Herfindahl Index’; deregulation;

    JEL classification:

    • K23 - Law and Economics - - Regulation and Business Law - - - Regulated Industries and Administrative Law
    • L22 - Industrial Organization - - Firm Objectives, Organization, and Behavior - - - Firm Organization and Market Structure
    • L43 - Industrial Organization - - Antitrust Issues and Policies - - - Legal Monopolies and Regulation or Deregulation


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