OPTIMUM-WELFARE AND MAXIMUM-REVENUE TARIFFS UNDER BERTRAND DUOPOLY

This article derives the maximum‐revenue tariff and the optimum‐welfare tariff under Bertrand duopoly with differentiated products. It is shown that both tariffs are lower under Bertrand duopoly than under Cournot duopoly. Also, the optimum‐welfare tariff may exceed the maximum‐revenue tariff under both Bertrand duopoly and Cournot duopoly. This result is more likely the lower the costs of the home firm relative to the costs of the foreign firm, and the greater the degree of product substitutability. Also, it is shown that the optimum‐welfare tariff is less likely to exceed the maximum‐revenue tariff under Bertrand duopoly than under Cournot duopoly.     

PRIVATISATION AND TIMING IN A MIXED OLIGOPOLY WITH BOTH FOREIGN AND DOMESTIC FIRMS*

This paper models a mixed oligopoly with both a domestic and a foreign private firm and examines the resulting timing in the quantity setting game. We demonstrate that with a single simultaneous pre‐game delay stage, the resulting endogenous timing has either the public firm leading or the two private firms leading. An alternative characterisation of the pre‐game stage results in the single timing in which the two private firms lead and the public firm follows. For all timings that emerge endogenously, we show that privatisation will always lower domestic welfare but its influence on global welfare is ambiguous.     

TARIFFS AND IMPORTS MISINVOICING UNDER OLIGOPOLY

Mismatch of trade statistics between developed and developing countries indicate a substantial misinvoicing of trade figures, primarily by developing country traders. This is due to the inflexible exchange rate regimes, severe import restrictions and export subsidies prevailing in Less Developed Countries (LDCs). In this paper, we focus on import underinvoicing due to high tariff barriers in a market where domestic producers compete with importers. Specifically, we examine how tariff levels, market structure and government intervention (in the form of intensity of monitoring and severity of penalties) affect the levels of underinvoicing. We also look at the optimal levels of import tariff and instruments of government intervention in these circumstances.     

PRIVATIZATION AND EFFICIENCY GAIN IN AN INTERNATIONAL MIXED OLIGOPOLY WITH ASYMMETRIC COSTS*

This paper examines two policy instruments, privatization of the domestic public firm and imposition of a tariff on foreign private firms in an international mixed oligopolistic model with asymmetric costs. It first demonstrates that different orders of moves of firms will imply different government decisions on optimal tariff and on privatization policy. Following Hamilton and Slutsky (1990 ), this paper then uses an extended game to discuss endogenous roles. It indicates that the efficiency gain that highlights the importance of foreign competition is crucial in determining the welfare improving privatization policy. Moreover, the endogenous equilibria are associated with different government decisions on privatization.     

STRATEGIC BUDGET CONSTRAINTS IN A UNIONIZED MIXED OLIGOPOLY

This paper considers the budget‐constraint problem where the government decides whether or not to impose a budget constraint on the public firm, assuming the public firm is less efficient than private firms. We find that imposing budget constraints on the public firm is the preferred choice because of the welfare‐improving effect. Our model suggests that the wage levels of the public firm can be lower or higher than those of private firms depending upon the degree of inefficiency. These results differ from Ishida and Matsushima's findings that in a unionized mixed duopoly, tight budget constraints can enhance social welfare when the public firm is as efficient as private firms.     

MIXED OLIGOPOLY IN A SINGLE INTERNATIONAL MARKET*

This paper departs from previous literature by considering a mixed oligopoly with two countries each with public and private firms competing in a single market. This differs from the traditional framework of examining a single domestic market in which foreign and domestic firms compete and is motivated, in part, by international airline markets but serves to characterise many markets. The resulting equilibrium emphasises that the strategic interaction of the two public firms usually serves to reduce welfare. Thus, the usual reason to imagine a public firm in a mixed oligopoly, to enhance welfare, is lost when such firms compete in the interest of their respective countries.     

OLIGOPOLY AND COST SHARING IN ECONOMIES WITH PUBLIC GOODS

We study economies that involve both small and large traders as well as the choice of a public project. Within this framework, we establish two sufficient conditions under which the set of competitive allocations coincides with the core. Our first core equivalence result holds under the assumption that there is a countably infinite set of large traders similar to each other. The second result, independent of the number of large traders, requires the existence of a coalition of small traders with the same characteristics of the large traders. Finally, we show how the generalized Aubin approach to cooperation may dispense with both conditions.     

WELFARE ENHANCING COORDINATION IN CONSUMER COOPERATIVES UNDER MIXED OLIGOPOLY

The recent globalization of world economies has led the retail markets of developed countries towards increasing levels of integration and strategic interdependence. A non negligible share of retail and food markets is currently served by co‐operative societies. Consistently with this trend, the consumer cooperatives have recently experienced increasing levels of integration. The main aim of this paper is to study the welfare effects of coordination among consumer cooperatives competing in quantities in a mixed oligopoly against profit‐maximizing firms. We show that, in absence of agency problems, under increasing or constant returns to scale a higher output coordination of the consumer cooperatives does not affect the total welfare as long as a nonnegative profit constraint holds in these firms. On the other hand, under decreasing returns to scale, the consumer cooperatives contribute more to social welfare when acting on behalf of all consumers. This is because, by coordinating consumers’ preferences, these firms can reduce their market output, thus helping the market to come closer to the first best. All together these results seem to provide an argument in favour of the recent process of integration involving consumer cooperatives in many developed countries.     

INTERNATIONALIZATION STRATEGIES IN OLIGOPOLY WITH HETEROGENEOUS FIRMS

This paper examines the foreign direct investment (FDI) versus exports decision of foreign oligopolistic firms under cost heterogeneity. An additional motivation for firms to invest abroad is the technological sourcing via spillovers, which flow from the host more efficient firm to foreign less advantaged firms. For intermediate values of the set‐up costs associated with FDI entry, it is shown that foreign firms choose opposite entry strategies. An equilibrium where the less efficient foreign firm exports whereas the more efficient invests is more likely to happen when foreign firms become more heterogeneous, the larger the trade costs and not too big oligopolistic profitability. Interestingly, the opposite may also be an equilibrium thus finding that the more efficient firm does not choose to invest, a result that emphasizes the relevance of the strategic setting under consideration. The latter result identifies a market failure since welfare in the host market is higher when both firms undertake FDI; a finding that calls attention to how appropriate are host government policies towards internationalization strategies.     

CARTELISING GROUPS IN DYNAMIC HYPERBOLIC OLIGOPOLY WITH ANTITRUST THRESHOLD

Empirical evidence, and theoretical results have shown that, in an industry, higher concentration index indicates higher price‐cost margin. In order to detect collusive behaviour the antitrust authorities often monitor the Herfindahl‐Hirschman Index. We consider N‐firm oligopolies where a group of firms partially cooperate with each other, and monitor the Herfindahl‐Hirschman Index as well. After suspecting that the authorities might notice the violation of antitrust regulations, they stop their cooperation. The group will not cooperate again until the Index moves back to the legal domain. This flip‐flop dynamical model is formulated, the equilibria are determined, and the asymptotic properties of the system are examined.     

ON THE SUSTAINABILITY OF COLLUSION IN A DIFFERENTIATED OLIGOPOLY WITH A CARTEL AND A FRINGE

We discuss the effects of the existence of non‐colluding (fringe) firms on cartel sustainability. We obtain, using trigger strategies, that with product differentiation collusion is always more easily sustained when firms compete in prices than when firms compete in quantities. This is true basically because (i) price competition is more intense than quantity competition, and (ii) fringe firms exacerbate the fact that cartel firms have more incentives to deviate from the agreement under quantity competition. This result reverses previous findings where, in the absence of fringe firms, product differentiation plays a crucial role in determining the effectiveness of price or quantity competition in sustaining collusion.     

FOREIGN DIRECT INVESTMENT IN A TWO‐TIER OLIGOPOLY: COORDINATION,VERTICAL INTEGRATION,AND WELFARE*

We study foreign direct investment (FDI) by two independent investors/entrants into a two‐tiered oligopolistic industry. An FDI subsidy at a single stage of production can be sufficient to resolve the coordination problem facing investors thereby inducing entry at both stages. However, due to linkage offsetting, FDI at both stages may yield lower domestic welfare than FDI at a single stage. Vertical integration not only solves the coordination problem, it also eliminates double marginalization. But since the integrated multinational does not sell the intermediate to local firms, its entry generates no vertical linkages and can yield lower welfare than FDI by independent firms.     

THE SCOPE FOR NON‐PROFIT OBJECTIVES IN A MIXED OLIGOPOLY UNDER INTERNATIONAL COMPETITION

We ask how the scope for non‐profit objectives in a state‐owned enterprise (SOE) in a mixed oligopoly changes because of competition from firms in another country. There is no change if costs and demand are given, unless the trade partner is a low‐cost country. However, the scope for non‐profit objectives is limited by the country's relative size if wages are market‐clearing and if workers and firms are stationary, because of reduced competitiveness caused by higher real wage rates. The total surplus is then not affected by the actions of the SOE. International trade does not otherwise reduce the scope for its non‐profit objectives if workers and firms are mobile, but productivity differences might require restrictions in order to avoid a complete relocation of the workforce in either country.     

POLITICAL ASYMMETRY AND COMMON EXTERNAL TARIFFS IN A CUSTOMS UNION

This paper examines the effect of political and economic asymmetries in the formation of common external tariffs (CETs) in a customs union (CU). We do so by introducing possible cross‐border lobbying and by endogenizing tariff formation in a political economic model for the determination of CETs. The latter allows us to consider asymmetries among the member nations in their susceptibilities to lobbying. We also consider asymmetries in the influence of the member nations in CU‐wide decision‐making. A central finding of this paper is that, in the absence of economic asymmetry, the CET rises monotonically with the degree of asymmetry in country influences if the two countries are equally susceptible to lobbying. If influences are the same, the CET also rises monotonically with the degree of asymmetry in susceptibilities. These results hold irrespective of whether the lobby groups in the two member countries cooperate or work non‐cooperatively.     

信息优势、市场预期与国有商业银行的经营业绩-基于不完全信息COURNOT混合寡占模型的分析

本文基于不完全信息Cournot混合寡占模型前瞻性地分析了国有商业银行所拥有的中国存款市场信息优势与不具有信息优势的外资银行对这些市场信息预期的变化将对国有商业银行的经营业绩带来怎样的影响,以及国有商业银行的信息优势是否必然会转化为与外资银行进行策略性竞争中的竞争优势等重要问题。研究发现,在现实条件下,与不具备信息优势时相比,拥有存款市场供给行情的信息优势会使得国有商业银行大体上获得更多的均衡利润;而当国有商业银行拥有存款供给利率敏感性方面的信息优势时,在一定条件下,国有商业银行的信息优势反而有可能变为竞争劣势。     

SUBSIDIZATION AND BARGAINING IN MIXED OLIGOPOLIES

In this paper, we consider political interaction in a mixed oligopoly by characterizing how a subsidy is endogenously determined through the bargaining process between firms and politicians. We discuss how the nature of the political equilibrium changes with the type of competition, the specification of the cost function, and the timing of the game. We show that when bargaining between firms and politicians takes place, the resulting social welfare may be even worse than that under a public firm monopoly.     

INFLOW OF FOREIGN CAPITAL AND TRADE LIBERALIZATION IN A MODEL WITH AN INFORMAL SECTOR AND URBAN UNEMPLOYMENT

Abstract.  The paper has made an attempt to analyse the effects of liberalized trade and investment policies on welfare and open unemployment in a developing economy in terms of a three sector Harris-Todaro type general equilibrium model. Following empirical evidence it is assumed that there is wage rigidity in urban sectors, which leads to the simultaneous existence of open unemployment and an urban informal sector in the migration equilibrium. The paper deserves special attention for its interesting results which are completely opposite to those generated by the standard Harris-Todaro model.     

TAXING FOREIGN PROFITS WITH INTERNATIONAL MERGERS AND ACQUISITIONS*

A large part of border crossing investment takes the form of international mergers and acquisitions. In this article, we ask how optimal repatriation tax systems look like in a world where investment involves a change of ownership, instead of a reallocation of real capital. We find that the standard results of international taxation do not carry over to the case of international mergers and acquisitions. The deduction system is no longer optimal from a national perspective and the foreign tax credit system fails to ensure global optimality. The tax exemption system is optimal if ownership advantage is a public good within the multinational firm. However, the cross‐border cash‐flow tax system dominates the exemption system in terms of optimality properties.