In this paper, we analyze successive oligopolies where downstream firms share the same decreasing returns technology of the Cobb-Douglas type. We stress the differences between the conclusions obtained under this assumption and those resulting from the traditional literature in which output firms use a constant returns technology. It is shown that when firms use a decreasing returns technology, (i) the profit of a downstream firm can decrease when the upstream market is more competitive; (ii) the input price does not tend to the corresponding marginal cost when the number of firms in both markets tends to infinite; and (iii) double marginalization is lower. Finally, the effects of mergers are revisited to highlight the role played by the technology of output firms.
AbstractWe propose a model of international oligopoly with two countries, two vertically-differentiated goods, and heterogeneous consumers in terms of their willingness to pay for quality. Various sources of pollution are taken into account: consumption, production and the transportation of goods between the two countries. Green persuaded consumers display consumption home bias: they derive additional satisfaction when consuming a domestic good because buying locally abates transportation pollution. We investigate whether consumption home bias effectively curbs global emissions. Finally, we uncover the environmental role played by the globalization of markets.
In this paper, we investigate the effect of cost misreporting of extractive firms on the optimal design of tax policies. We build a two-period, two-country model where governments aim to attract a foreign-owned multinational firm to raise tax revenues by levying a profit tax and a royalty. The firm overstates its production costs to reduce declared profits and it decides in which country to locate. We find that cost overstatement pushes royalties upward but remains detrimental for tax revenues as well as the capital invested by the firm. The mining country that attracts the extractive firm is often the country with the highest coefficient of overstatement. However, the firm may locate in the country with the lowest overstatement and lowest royalty if both countries have the same profit tax. Reinforcing expertise in mining sectors to reduce asymmetries of information between firms and tax authorities appears to be a priority in developing resource countries.
In this paper, we analyze a vertically differentiated mixed duopoly in medical care services. Pollution is the source of illness. The government has a dual role. It decides how much to invest to reduce the pollution level and it may participate in the health market running a public hospital. We find that the presence of the public provider increases the average quality of the service in the market and it reduces the rate of mortality. Furthermore, when the public hospital offers services with the highest quality, then this has positive spillovers on the quality offered by the private provider. Despite these positive welfare improving features, the mixed duopoly in medical care goes along with the highest level of pollution. In the presence of an increasing concern about the relationship between pollution and health, understanding the role of public intervention appears crucial.
AbstractIn this paper, we extend the concept of stability to vertical collusive agreements involving downstream and upstream firms, using a setup of successive Cournot oligopolies. We show that a stable vertical agreement, the unanimous vertical agreement involving all downstream and upstream firms, always exists. Thus, stable vertical collusive agreements exist even for market structures in which horizontal cartels would be unstable. We also show that there are economies for which the unanimous agreement is not the only stable one. Furthermore, the Stigler statement according to which the only ones who benefit from a collusive agreement are the outsiders need not be valid in vertical agreements.
ABSTRACTThis paper investigates how an incumbent monopolist can weaken potential rivals or deter entry in the output market by manipulating the access of these rivals in the input market. We analyse two polar cases. In the first one, the input market is assumed to be competitive with the input being supplied inelastically. We show that this situation opens the door to entry deterrence. Then, we assume that the input is supplied by a single seller who chooses the input price. In this case, we show that entry deterrence can be reached only through merger with the seller of the input.
AbstractGender norms, encompassing social and cultural attitudes that dictate suitable behaviors for women and men, are pivotal in shaping societal dynamics. This paper explores the intricate relationship between knowledge accumulation, as reflected in a nation's economic complexity, and its gender norms. Drawing on the revealed preferences of a substantial cohort, totaling 64,954 individuals from up to 49 countries, and their respective countries' economic complexity indices, we uncover a non-trivial relationship. At lower levels of economic complexity, there exists an inverse correlation between less rigid gender norms and technological sophistication. This suggests that the initial stages of knowledge accumulation coincide with inflexible gender norms, particularly regarding women's roles within households. However, as economic complexity surpasses a certain threshold, this correlation reverses. Further knowledge accumulation aligns with more adaptable gender norms, indicating a shift towards less rigidity, especially concerning women's roles in the public sphere. These findings underline the connection between economic development and shifting gender norms. Notably, while economic complexity catalyzes a transition towards less rigid norms regarding women's household roles at lower stages, it is only at a certain threshold that significant changes in norms pertaining to women's public roles become evident. This study contributes to understanding the evolution of gender norms in the context of economic development. By shedding light on the intricate dynamics between knowledge accumulation and gender norms, it emphasizes the significance of considering socioeconomic factors in addressing gender norms. Findings have implications for policymakers and stakeholders offering valuable insights into the mechanisms driving societal change.
This paper establishes economic complexity as a powerful predictor of environmental attitudes. While the economic complexity index (ECI) has been associated with a series of economic outcomes, yet there has not been a link in the literature between ECI and environmental attitudes. This research pushes forward the hypothesis that economic complexity shapes cultural values and beliefs. The research method used is a multilevel empirical analysis that associates aggregate values of the ECI, at the country level, with individual responses related to attitudes towards the environment. Our findings suggest that a marginal increase of the ECI, increases by 0.191 the probability to be a member of environmental organisations and an increase by 0.259 in the probability to engage in voluntary work for the environment. To further reinforce our findings by ensuring identification we replicate the benchmark analysis using as a proxy of a country's level of economic complexity, the average ECI of the neighbouring countries (weighted by population and/or volume of trade). With a similar intention, i.e., to mitigate endogeneity concerns as well as to further frame our findings as "the cultural implications of ECI" we replicate our analysis with a sample of second generation immigrants. The immigrant analysis, suggests that the level of economic complexity of the parents' country of origin, has a long-lasting effect on second generation immigrants' attitudes related to the environment. Because humankind's attitudes and actions are of key importance for a sustainable future, a better understanding as to what drives environmental attitudes appears critical both for researchers and policy makers.
In this paper, we analyze theoretically and empirically the effects of tax changes on firms' profits in extractive industries. In the theoretical part, we assume a country that levies a profit tax and a royalty on the profits of extractive firms to maximize its tax revenues. The mining companies may reduce their taxable income by cost manipulation. By analyzing the optimal choice of the government and of the firms, we first establish the optimal tax policy and then we investigate the impact of the optimal fiscal policy on firms' profits. In the empirical part of the paper, we estimate the effect of the profit tax and royalty on the extracting firms' profit in African countries during the period spanning from 2007 to 2018. We use the Mining Intelligence database to constitute a panel of annual individual data from a database of 363 gold mines located in 21 Sub-Saharan countries. We obtain an inverse relationship between the tax rate change of the two tax instruments and the profit of the firms. ; December
This paper investigates the ability of a fully harmonized carbon tax to curb carbon emissions in a globalized economy characterized by an uneven spatial distribution of heterogeneous firms. The level of the carbon tax matters for the direction of the relocation and its impact on global emissions. When the carbon tax is low enough, emissions are reduced as firms relocate to the smaller country to pay lower taxes by reducing their output. If the carbon tax is too high, then firms react by relocating to the larger country to maintain their export activity, so that the most environmentally friendly spatial configurations can be removed.
This paper investigates the ability of a fully harmonized carbon tax to curb carbon emissions in a globalized economy characterized by an uneven spatial distribution of heterogeneous firms. The level of the carbon tax matters for the direction of the relocation and its impact on global emissions. When the carbon tax is low enough, emissions are reduced as firms relocate to the smaller country to pay lower taxes by reducing their output. If the carbon tax is too high, then firms react by relocating to the larger country to maintain their export activity, so that the most environmentally friendly spatial configurations can be removed.
