Lack of commitment to future privatization policies may lead to worst welfare outcome

We investigate the welfare consequences of a lack of commitment to future privatization policies. The government implements a privatization policy after the competition structure is determined by the entry of private firms. We find that in an equilibrium, the government fully privatizes (nationalizes) a public firm if private firms expect that the government fully privatizes (nationalizes) the public firm. This is because an increase in the number of firms entering a market increases the government's incentive to privatize the public firm, which mitigates future competition and stimulates entries. The full-privatization equilibrium is the worst privatization policy among all possible (either equilibrium or non-equilibrium) privatization policies for welfare because it causes excessive market entry of private firms. Partial commitment of a minimal public ownership share may mitigate this problem.     

Mixed oligopoly, optimal privatization, and foreign penetration

This paper examines the impact of foreign penetration on privatization in a mixed oligopolistic market. In contrast to the simple framework of single domestic market with foreign entry by entry mode of foreign direct investment (FDI) or exports, our result shows that government should increase the degree of privatization along with increasing proportion of domestic ownership of multinational firms. Furthermore, we show that an increase in domestic ownership of multinational firms raises all domestic private firms' profit and social welfare, while it may either increase or decrease public firm's profit. With the aid of numerical example, intensive competition from private firms in general will enhance the degree of privatization gradually; in particular, the degree of privatization is lower in the presence of multinational firms.     

The Optimal Privatization Policies under an International Mixed Duopoly

This paper explores the socially optimal privatization policies under the setting of international mixed duopoly. We find that partial privatization is socially optimal under Cournot competition and private leadership competition, whereas full nationalization is socially optimal under public leadership competition. Moreover, the equilibrium social welfare under private leadership competition is higher than that observed under Cournot competition and that observed under private leadership competition, which differs from the findings of Matsumura ( 2003b ). We also show that the endogenous timing game has a subgame perfect Nash equilibrium outcome, under which the government chooses a partial privatization policy, and private leadership competition emerges as the optimal output decision sequence of firms. An important policy implication from this paper is that the government should partially privatize the public firm and facilitate the emergence of private leadership competition in an international mixed market.     

PRICE AND QUANTITY COMPETITION WITH ASYMMETRIC COSTS IN A MIXED DUOPOLY: A TECHNICAL NOTE

We consider a mixed duopoly in which private and public firms can choose to strategically set prices or quantities when the public firm is less efficient than the private firm. Thus, even with cost asymmetry, we obtain exactly the same result (i.e., Bertrand competition) of Matsumura and Ogawa (2012) if Singh and Vives’ (1984) assumption of positive primary outputs holds. However, compared to endogenous determination of the type of contract without cost asymmetry, our main finding is that in the wider range of cost asymmetry, different type(s) of equilibrium related to or not related to the limit‐pricing strategy of the private firm can be sustained. Thus, when considering an implication on privatization, we may overestimate the welfare gain of privatization because Cournot competition takes place after privatization even though cost asymmetry exists between firms. While the result of Matsumura and Ogawa (2012) holds true if the goods are complements, we find the novel results in the case of substitutes.     

ALTERNATIVE STRATEGIES OF A PUBLIC ENTERPRISE IN OLIGOPOLY REVISITED: AN EXTENSION TO STACKELBERG COMPETITION

This paper revisits De Fraja and Delbono (1989), which is the seminal paper on mixed oligopoly, in order to pay more attention to Stackelberg competition. First, we show that, even in Cournot competition, if the number of private firms is sufficiently small, privatization necessarily reduces social welfare. Second, we demonstrate that when a public firm is a Stackelberg leader before and after privatization, privatization necessarily reduces welfare irrespective of the number of private firms. Moreover, we show that even when a public firm remains a follower, privatization reduces welfare if the number of private firms is relatively small.     

Mixed duopoly,privatization, and subsidization with excess burden of taxation

We investigate optimal tax‐subsidy policies in mixed and private oligopolies with excess burden of taxation. We compare the optimal subsidies and the resulting welfare levels among four regimes: mixed and private Cournot duopolies and Stackelberg competition with public and private leaderships. We show that, in contrast to the existing works on the privatization neutrality theorem, privatization affects resulting welfare.     

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.     

Collusion in mixed oligopolies and the coordinated effects of privatization

We study the sustainability of collusion in mixed oligopolies where private and public firms only differ in their objective: private firms maximize profits, while public firms maximize total surplus. If marginal costs are increasing, public firms do not supply the entire market, leaving room for private firms to produce and possibly cooperate by restricting output. The presence of public firms makes collusion among private firms harder to sustain, and maybe even unprofitable. As the number of private firms increases, collusion may become easier or harder to sustain. Privatization makes collusion easier to sustain, and is socially detrimental whenever firms are able to collude after privatization (which is always the case if they are sufficiently patient). Coordinated effects thus reverse the traditional result according to which privatization is socially desirable if there are many firms in the industry.     

Endogenous asset ownership structures in deregulated markets

This paper determines the equilibrium ownership structure in an emerging market deregulated by a joint privatization and investment liberalization. It is shown that bidding competition in the privatization stage is not sufficient for reaching an efficient equilibrium market structure. Competition in the ensuing entry stage is also required. Otherwise, one firm can induce another to take the role of the weak firm in the subsequent product market competition, by making concessions in the bidding in the privatization auction. It is also shown that Employment Guarantees may “help” the buyer of the privatized firm “abstain” from investing and thus create a less competitive market structure.     

An analysis of entry-then-privatization model: welfare and policy implications

This study formulates a new model of mixed oligopolies in free entry markets. A state-owned public enterprise is established before the game, private enterprises enter the market, and then the government chooses the degree of privatization of the public enterprise (termed the entry-then-privatization model herein). We find that under general demand and cost functions, the timing of privatization does not affect consumer surplus or the output of each private firm, while it does affect the equilibrium degree of privatization, number of entering firms, and output of the public firm. The equilibrium degree of privatization is too high (low) for both domestic and world welfare if private firms are domestic (foreign).     

R&D competition between public and private sectors

We investigate a mixed market where a welfare-maximizing public research institute competes against profit-maximizing private firms. We investigate R&D competition by using a standard model of patent races where each firm chooses both its innovation size and R&D expenditure. We find that the innovation size (R&D expenditure) chosen by the public institute is too small (too large) from the viewpoint of social welfare, respectively, and so the government should control the public institute appropriately. We also discuss the welfare implications of privatization of public research institutes.     

Vertically Related Markets,Foreign Competition and Optimal Privatization Policy

This paper examines the optimal privatization policy in vertically related markets in which an upstream public firm competes with a foreign private rival in supplying a produced input to the domestic and foreign downstream firms competing in the domestic market. It shows that if the upstream public firm's market share is sufficiently high, full nationalization is optimal and the resulting profit margin is positive. However, complete privatization is never optimal. Numerical simulations reveal both the diverse optimal privatization regimes and the patterns of optimal privatization levels with varying numbers of the domestic and foreign downstream firms.     

Duopoly models with a joint capacity constraint

The paper proposes a two-stage mixed duopoly model of exhaustible resource market where at the first stage the government decides on the degree of privatization of public firm and at the second stage the public and private firms decide simultaneously on the two-period extraction paths. It is demonstrated that if the two firms have symmetric technologies with increasing marginal extraction costs and the same resource stocks, then neither full nationalization of any of the two firms nor full privatization will be socially desirable. It is shown that the presence of a semi-public firm improves intertemporal allocation of the fixed resource stock. Thus, partial privatization is optimal even under exogenously fixed total outputs of each firm. For asymmetric cost case, when the public firm is less efficient than the private firm, we derive the conditions under which full nationalization or full privatization is optimal.     

Optimal degree of privatization and the environmental problem

We determine the optimal degree of privatization in a mixed duopoly when the environmental problem exists. With regard to the ownership of the private firms, we analyze two cases: (h) the private firm is owned by domestic private investors and (f) it is owned by foreign private investors. A comparison of the two cases presents the following results. Partial privatization is always desirable in (h), and the optimal degree of privatization is independent of the degree of environmental damage. However, in (f), whether partial privatization is desirable or not depends on the degree of environmental damage: there are cases where full privatization or full nationalization is optimal.     

COURNOT AND BERTRAND EQUILIBRIA COMPARED: A CRITICAL REVIEW AND AN EXTENSION FROM THE OUTPUT‐STRUCTURE VIEWPOINT*

This paper compares Bertrand competition with Cournot competition. In previous studies, the welfare ranking has not been examined in any general setting. One purpose of this work is to fill this gap. In the Zanchettin model, the ranking regarding the less efficient firm's output is sensitive to the degree of asymmetry between firms, whereas the welfare ranking is not. Another goal of this study aims at dealing with this paradox. We demonstrate that the rankings regarding average price, average output and the Herfindahl index are not sensitive to the degree of asymmetry, and hence can explain the welfare ranking.     

Optimal privatization and uniform subsidy policies: A note

The privatization neutrality theorem states that the share of public ownership in a firm does not affect welfare under an optimal uniform tax‐subsidy policy. We revisit this neutrality result. First, we investigate the case in which the private firm is domestic. We show that this neutrality result does not hold unless public and private firms have the same cost function. Next, we investigate a case in which both domestic and foreign investors own the private firm. We show that the optimal degree of privatization is never zero, and thus, the neutrality result does not hold, even when there is no cost difference between public and private firms.     

The nexus of market concentration and privatization policy in mixed oligopoly

We analyze the nexus of privatization policy and market concentration ratio in a mixed oligopoly where one public enterprise competes against n private firms with asymmetric costs. It is shown that the nexus of privatization policy and market concentration ratio is highly sensitive to the curvature of the market demand. When the market demand is concave (convex) to the origin, a higher concentration ratio leads to a higher (smaller) degree of privatization; whereas in the case of linear demand, the privatization ratio is independent of market concentration ratio.     

Optimal privatization in a mixed duopoly with consistent conjectures

We show that partially privatizing a public firm alters underlying conjectures, in turn, changing the optimal degree of privatization. The consistent conjectures equilibrium (CCE) generates substantially greater optimal privatization than does any conjecture shared between the firms including the standard Cournot–Nash equilibrium (CNE). Yet, when the private rival is foreign, the CCE generates substantially less privatization than the CNE. The optimal extent of privatization with a domestic rival exceeds that with a foreign rival in the CCE as well as in the CNE.     

Export rivalry,vertically-related markets,and optimal public ownership policy

This paper considers the optimal public ownership policy of an upstream firm which competes with a foreign private rival. Both firms supply a produced input to the domestic and foreign downstream firms that compete in an export market. The paper shows that complete privatization of the domestic upstream firm is never optimal. It will likely be fully nationalized if its market share is high, the domestic downstream firms' market share is low, and the total number of firms in the downstream is large. Simulation results reveal that the public firm's optimal profit margin may be negative and that the government ownership level may exhibit a reswitching phenomenon as the number of domestic downstream firms keeps growing. The paper sheds light on the possibility of using government ownership policy as a pseudo-trade and industrial policy.     

TO LIST OR TO MERGE? ENDOGENOUS CHOICE OF PRIVATIZATION METHODS IN A MIXED MARKET

When and how to privatize a public firm? This paper suggests that a welfare‐enhancing privatization may be triggered by a negative demand shock. When the shock is relatively mild, it is optimal to privatize a public firm by means of stock market listings; when the shock is sufficiently large, a public–private‐firm merger becomes optimal. This paper also considers a government that cares about privatization revenues and about social welfare. It characterizes how the weight attached to privatization revenues and the improvement in production efficiency of the privatized public firm through a stock market listing may affect the government's choices concerning privatization.