Partial Privatization in a Differentiated Mixed Oligopoly

A model of differentiated mixed oligopoly is developed to systematically discuss the welfare consequences of partial privatization of a public firm. We analytically derive the optimal degree of partial privatization not only in the short run with restricted entry but also in the long run with free entry. It is shown that the short-run optimal policy is non-monotonic in the degree of love of variety, while the optimal degree of privatization is monotonically increasing in the consumer's preference for variety in the long run.      

A Theory of Mergers and Merger Waves

We consider a sequential merger game between Cournot firms with homogeneous product and quadratic cost. A large slope of the marginal cost function or a small slope of inverse market demand are both predicted to increase the incentive to merge. The profitability of any merger increases with the number of mergers having already taken place. Thus, mergers tend to occur in waves in industries that have experienced exogenous shocks affecting firms’ cost or demand. We also show some mergers that are not profitable for merged firms in the short-run may take place in the early stage of a wave.     

The Triple Inefficiency of Uncoordinated Environmental Policies

When pollution is transboundary and there is international trade, a domestic inefficiency may arise in addition to the well‐known inefficiencies at the international level. More precisely, there will be a Nash equilibrium in which each country chooses a policy that gives it lower welfare than would otherwise be possible given the emission levels of all countries. However, there will also be a Nash equilibrium in which each country chooses tradable emission quotas as its policy instrument to achieve its desired level of emissions. In this Nash equilibrium, welfare in each country is maximised given the emission levels of all countries.     

Mixed Oligopoly at Free Entry Markets

We investigate the optimal behavior of a public firm in a mixed market involving private firms and one public firm. Existing works show that welfare-maximizing behavior by the public firm is suboptimal when the number of firms is given exogenously. We allow free entry of private firms and find that, in contrast to the case with the fixed number of firms, welfare-maximizing behavior by the public firm is always optimal in mixed markets. Furthermore, we find that mixed markets are better than pure markets involving no public firm if and only if the public firm earns nonnegative profits.     

Mixed Oligopoly and Environmental Policy

We show in this paper that when there are both public and private firms in product markets (a mixed oligopoly) the decision whether to privatize a public firm interacts with the environmental policy of governments. Therefore, the outcome of the decision whether to privatize a public firm may be different if the government internalizes the environmental damage than if the government ignores it. When the government sets a tax to protect the environment, the tax is lower in the mixed oligopoly than in the private one even though the environmental damage is greater. In the mixed oligopoly the marginal cost of the public firm is lower than the market price.     

Privatization, insider control and managerial entrenchment in Russia

This paper provides new survey evidence on managerial entrenchment and the role of outsiders in the post-privatization restructuring of Russian enterprises. The major findings are that managers are hostile towards outside ownership, and they effectively collude with other employees to preserve insider control. The paper also provides empirical evidence that the gradual accumulation of shares by managers is not based only on a profit motive, but is also driven by their efforts to preserve insider control. The issues raised have relevance to other transition economies where the privatization process has encouraged insider control, such as Ukraine and Belarus.     

Environmental Taxes and First-Mover Advantages

This paper studies whether governments prefer to be leaders or followers in environmental policies. To analyze this question I assume transboundary pollution and two countries that have to decide whether to set environmental taxes sequentially or simultaneously. When taxes are set sequentially an effect, denoted as the sequential setting effect, arises that raises the equilibrium taxes. I show that whether governments prefer to be leaders or followers in taxes depends on the degree to which environmental pollution spills over to trading partners. When this overspill is low enough, taxes are strategic complements and both the leader and the follower obtain greater welfare than under a simultaneous tax setting. However, the leader country obtains greater welfare than the follower. In this case, governments set taxes sequentially. When the degree to which environmental pollution spills over to trading partners is high enough, taxes are strategic substitutes and governments set taxes simultaneously. In this case, each government wants to avoid becoming the follower in taxes.     

Privatization and efficiency wages

The impact of privatization is investigated in a shirking model of efficiency wages. Without trade unions, privatization — modeled as a stricter control of employees — lowers wages and raises employment, output, and profits, while effort and productivity effects depend on the employees' risk aversion. However, for a utilitarian monopoly union, facing a company characterized by a constant-elasticity labor-demand schedule, privatization raises efficiency wages. If privatization is modeled as a stronger profit orientation, wages, effort, and labor productivity will rise, while employment will shrink in a wage-setting firm. Again, wage and employment effects can be reversed in the case of wage negotiations.     

Transboundary Environmental Problems with Mobile but Heterogeneous Populations

Most of the literature on transboundaryenvironmental problems treats population ineach country or region as constant, ignoringpopulation mobility. We showed previously thatif there is perfect population mobility betweenregions, and populations are homogeneous, asocially efficient outcome can be supported asa Nash equilibrium of the game of uncoordinatedpolicy setting, even without any internationalenvironmental agreement. In the present paperwe introduce heterogeneous population, and showthat when people differ, a non-cooperativeoutcome is generally inefficient. We alsodemonstrate that for a particular set ofobjective functions for the regionalgovernments, there is an equilibrium of thegame of uncoordinated policy setting that isefficient. Finally, we give an example wherethe decentralized outcome is efficient whenthere is no population mobility, butinefficient when there is population mobility.     

兼并和伯特兰德竞争的价格效应分析

本文采用博弈论方法研究兼并和伯特兰德竞争对价格、竞争等的影响.首先,分布在两个市场中的寡头公司分别选择同市场或跨市场的兼并活动,其次,两个市场中的寡头公司进行伯特兰德竞争.结论显示,有关需求函数的各种约束条件是决定价格升高或下降的关键因素,从而揭示了价格效应产生的原理.美国航空业的案例研究支持模型的基本结论.     

补偿、政府目标与民营化障碍--对我国国有企业民营化改革障碍的思考

中国的经济体制改革形成了一个竞争性市场,在这个竞争性市场上,民营企业具有较国有企业更高的效率,那么,在实践中民营化改革何以依旧争议不断,阻碍重重?改革是一个利益博弈过程,处理好各利益相关者的利益关系是改革成败的关键。从直观上看,只要效率提高了,就可以实现对利益受损者进行补偿,使各利益相关者都能从中受益,共同利益空间越大,改革的阻力就越小。但是,帕累托改进要求原企业经营者和职工得到完全补偿,这抬高了新所有者收购价格的下限,而政府的多重目标又使改制的利益空间收缩。文章从补偿和政府职能目标对改制的利益空间产生影响这一角度,来分析民营化的障碍,指出补偿要求和多重政府职能会影响改制的利益空间,从而阻碍了国企民营化的顺利推进。     

Mergers,multiperiod Cournot competition,and Coasian dynamics

Under the simplifying conditions of product homogeneity, linear demand, symmetric and constant marginal costs, the static Cournot–Nash equilibrium predicts that exogenous horizontal mergers generate losses for the participants if the participants represent less than 80% of the firms in the industry. I successfully challenge the applicability of this well-known merger paradox to markets for durable goods by introducing Coasian dynamics to the quantity competition, while maintaining all other simplifying conditions. I demonstrate that exogenous mergers with a relatively small number of insiders in industries with a relatively large initial number of firms can be profitable as long as the common discount factor is sufficiently high and the decision-making horizon is sufficiently long. Unlike previous research on mergers in durable-goods industries, the significance of the decision-making horizon is emphasized; mergers that are unprofitable in a short-horizon version of my model for all values of the discount factor can prove profitable in a long-horizon version provided that agents are sufficiently patient.     

Optimal Environmental Tax and Level of Privatization in an International Duopoly

This paper explores the optimal environmental tax and level of privatization in an international duopolistic market. We show that when the government is able to control the environmental tax and the extent of privatization, the optimal environmental tax is lower than the standard Pigouvian level. We also show that the optimal level of privatization of state-owned enterprises is partial privatization. Further, the optimal level of privatization is inversely dependent on the cleanup cost of past environmental contamination.     

民营化、外资股东和嵌入性:来自中国的证据

与传统经济学研究以代理理论为主对民营化的讨论不同,本文通过整合演进理论、制度理论和代理理论,研究了民营化企业改进绩效必须解决的组织和管理问题。以2001年经历了民营化并且在1998～2003年间持续运营的企业为样本进行实证研究,发现,外资股东参与的民营化企业更有可能改进治理结构,进行组织学习和资源能力的培养。但是,这种关系会受到改制企业组织和制度嵌入性的影响。因此,如何管理好组织和制度嵌入性的双重影响,是影响民营化企业改制后绩效改善的关键。     

Privatization, Land Reform, and Property Rights: the Mexican Experience

This paper is concernedwith rural property rights in Mexico. Consideration of this issuewas occasioned by the liberal program of reform adopted in 1992by the government of Carlos Salinas de Gortari, which providesfor a gradual privatization of the Mexican ejidos, a form ofcommunally administered property. The present contribution examinesto what extent this reform project is theoretically founded andwhich practical problems it encounters in implementation. Thegenesis and structure of rural property rights in Mexico is outlined.The problems associated with implementing the reform projectare discussed for an empirical case example in the Soconuscoregion (Chiapas) in Mexico. Finally, a number of consequencesare drawn.     

Transboundary Externalities in the Environmental Transition Hypothesis

The Environmental Kuznets Curve (EKC) is a hypothesis which implies that it is possible to grow out of environmental degradation. Most theoretical models of the EKC relation have not accounted for transboundary and intergenerational externalities nor have empirical studies provided evidence that validates an inverted U shaped relation between environmental degradation and economic growth for pollution problems where the effects are far-displaced or are long-delayed.This paper integrates the theory of transboundary externalities into the most common theoretical framework applied to the EKC hypothesis. It shows that where a significant proportion of the environmental impacts of economic activity occurs outside the territories in which those activities take place, the de-linking of growth and environmental degradation is less likely to happen. This proposition is demonstrated by assuming that decisionmakers have a Nash-type non cooperative strategic behavior.     

Privatization in PolandWhat was the government trying to achieve?1

This article uses the sequencing of privatization to infer the objective pursued by the Polish government in the privatization of its large manufacturing firms in the second half of the 1990s. We construct a model of mixed oligopoly and use it to evaluate the privatization process; our analysis is based on the assumption that firms which furthered the government's objective function the most would be chosen to be privatized first. Based on the features of the firms that were chosen for early privatization, our empirical analysis suggests that welfare maximization was more important than the desire to maximize the revenues from privatization and the government's budget or to minimize employment losses.     

英国国有企业民营化改革及对中国的启示

英国从20世纪80年代开始对国有企业进行了大规模、且比较成功的改革。英国的国有企业改革前所面临的困境与中国国营企业有着相似之处,改革打破了原有国有企业的垄断,注重股权分散化,以放松规制来促进民营化的顺利展开。借鉴英国的经验,对中国国有企业的改革与发展大有裨益。     

Environmental taxes and industry monopolization

This paper considers a market with an incumbent monopolistic firm and a potential entrant. Production by both firms causes polluting emissions. The government selects a tax per unit of emission to maximize social welfare. The size of the tax rate affects whether or not the potential entrant enters the market. We identify the conditions that create a market structure where the preferences of the government and the incumbent firm coincide. Interestingly, there are cases where both the government and incumbent firm prefer a monopoly. Hence, the government might induce profitable monopolization by using a socially optimal tax policy instrument.      

水泥企业并购的财务风险识别与控制

当前,并购重组已成为国内知名水泥企业做大做强的战略选择,但企业并购重组过程中不可避免地存在企业并购的风险,由于信息的不对称性、外部环境的不确定性、经营管理活动的复杂性和企业自身能力的有限性而导致企业并购后达不到预期的经济效益,甚至给并购之后企业的经营活动留下隐患。并购风险贯穿于整个并购活动,作为企业并购成功关键因素的财务风险应该引起我们足够的重视,能否识别、规避和控制并购中的财务风险,决定着并购的成败。