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This paper aims to consider the problem of determining the equilibriums on oligopoly market in case of Stackelberg leader (leaders) and reflexive behavior of market agents.

This paper includes economic and mathematical modeling, optimization methods and game theory.

This paper explains models of reflexive games on oligopoly market, taking into account the diversity of agents’ reasoning about strategies of environing and equilibrium mechanisms for coincidence or opposition of agents’ reflexive reasoning on the same rank of reflection.

This paper considers the oligopoly market with linear function of demand and costs of agents, the rational behavior of agents and the reflexive reasoning on the same rank of reflection. The set of agents’ reasoning about the environing strategies is considered as a set of market states for which the problem of agent’s optimal action choosing solves with the complete awareness.

Identification of reflexive behavior of environing allows agents to increase their market shares and profit.

Oligopoly markets play a leading role in the world oil trade and reflexive behavior affects the market equilibrium.

In the paper, the mechanisms of equilibrium in reflexive games on the linear duopoly market for arbitrary rank reflection are developed.

The purpose of this study is to analyze comparatively the properties of open-loop and closed-loop equilibria in a dynamic oligopoly model with price dynamics and reflexive behavior of market agents.

To consider dynamic competitive markets, the authors focus on a differential game theory in oligopolistic structures, using analytical models to illustrate how advertising effort, good differentiation and price stickiness interact simultaneously in the open-loop and the closed-loop Nash equilibria. The comparative assessment of these equilibria obtains some significant results.

An optimization model that enriches the continuous time is presented. Under the open-loop and the closed-loop, Nash equilibrium showed an increase in the total output, advertising in price stickiness and promotional efficiency, while there was a decrease in product differentiation and advertising promotional efficiency. However, the open-loop equilibrium levels are larger than the closed-loop equilibrium. Under the closed-loop information, the long-run equilibrium was faster than the opened-loop in a dynamic oligopoly. The graphical illustration was used to present the behavior of the model parameters.

This study helps managers to choose an appropriate price and advertising adjustment to maximize profit. The obtained results may help firms to make the smart decision and may provide managers the valuable tool for making decisions in the competitive market environments.

This is a first attempt to analyze a dynamic oligopoly in the differentiated market environment. It considers a joint action of the output and advertising in shaping the closed-loop and the open-loop equilibria with N competitors in a dynamic competitive setting.

Universally, university is considered as the apex body which is ethically obliged to present a substantial society. In doing so, universities often innovate dynamic business models and theories. Ideally, the countries whose universities contribute for better and sustainable business growth are the advanced one. However, universities themselves should be the business organisation – an argument is yet to receive attention. Although literature lacks in the area of education business especially university provision, the sector behaves as business entity after the inception of private sector. Therefore, this paper aims to explore the paradigm transformation of university sector and its impact on the society.

Given the differentiated nature of research questions, multiple techniques are used to collect the data. However, this research adopts the norms of qualitative methods. Both secondary and primary data are used. While secondary data are collected by University Grants Commission (UGC), primary data are collected through interviews.

Findings show that the development of university sector started following monopoly model. More than half a century, the same model was continued. Thereafter, duopoly model was introduced which carried until the inception of private sector. The growth of private sector followed oligopoly model which was further extended to small and medium enterprises (SMEs). These days, society compares university with “diploma mill”, as production of knowledge and civic society is longer than the part of the core business of university. Consequently, compromising with research is to be judged as a threat to overall development that includes business and social development.

A few studies have been published in the area of private university. To the best of the authors’ knowledge, none covers the oligopoly-ism and SME-ism behaviour of university and its impact on the concept of university and on the society. Therefore, this project aims to understand the norms of university business and its substantial contribution on the social change.

As the pharmaceutical industry is one of the key sectors of the health-care system, the identification of its structure is of particular importance. This paper aims to determine the structure of the pharmaceutical industry in Iran to provide appropriate solutions for pricing and regulation by policymakers. Iran is a growing pharmaceutical market with over $4bn in sales, so the supply side needs to be examined to meet the domestic consumption.

This research is a descriptive and retrospective analytical study which examines the Iranian pharmaceutical industry through library studies and using pharmaceutical data of the country’s Food and Drug Administration during 1992-2016. Due to data availability in firm level, the concentration ratio of N leading firms and the Herfindahl–Hirschman index are used to measure the concentration of the pharmaceutical market in 2014 and 2016.

The results show that pharmaceutical manufacturing, importing companies and distributing companies play roles in monopolistic competition market, loose oligopoly market and oligopoly market, respectively. For all companies, the magnitudes of Herfindahl–Hirschman indices indicate non-competitive settings. As a result, these companies set their own prices, and market demand affects their sales. In addition, demand for medicines is shaped in the form of supply-induced demand.

This research was accomplished with no computational limitation. However, it was confined to only one country, one industry and the mentioned period of study.

The pharmaceutical manufacturers have no influence on medicine prices, and government pricing regulations lessen the market power of such market agents. However, the easy entry to and exit from market stimulate producers to participate in manufacturing activities. The pharmaceutical importers may expand their imports in response to entry new actors; however, the new entrants weaken the coordination on pricing decisions.

As pharmaceutical distributers act in an oligopoly market, they can collude, reduce competition and lower the welfare of pharmaceutical consumers. In such conditions, high investment requirements and economies of scale may discourage the entry of new firms.

Although there are various studies on market structure in non-pharmaceutical industries, this study is a new effort to measure concentration in the Iranian pharmaceutical market and to determine its structure.

Price‐taking has long been mistakenly regarded as an inferior firm behavior in an imperfectly competitive market. This scenario is challenged when a “Naiver’s Paradox” is shown to exist in an oligopolic market where all firms produce the same product with the same technology (cost structure). It is shown that a firm behaving as a naive price‐taker with ignorance of its output impact on the market will perform no worse or even better than its rivals in terms of profits achieved, where the latter are assumed to take “Cournot”, “relative profit” or other more advanced strategies. More significantly, when the number of firms in the market is large, a price‐taker may achieve higher profit not only in a relative sense, but also in an absolute sense. Such paradoxical outcome is generic, for it results from neither ad hoc assumptions on market structure nor on information sets, but from the conventionally granted “convexity” assumption on cost functions. An analogous phenomenon is observed for oligopsony market.

The purpose of this paper is to critically examine and test the relationship between market structure and profitability in the industrial sector of the U. S. economy. The majority of empirical studies testing this relationship have found a positive but weak correlation between concentration and profitability. The basic point of contention in the literature is the explanation of why this correlation exists. The traditional or “Harvard school” interpretation of a positive correlation between profit levels and concentration across industries is that market power is associated with concentration and results in relatively higher prices than competition allows in unconcentrated industries (a price effect). A more recent hypothesis, which is associated with the Chicago school of economics, is that profitability in concentrated industries is a result of their efficiency and corresponding lower costs of production (a cost effect).

The debate over whether or not to allow the sale of human organs is compelling enough to warrant discussion. A literature review revealed much ethical discussion, but little discussion was found on economic outcomes related to donors and selling human organs. It was demonstrated in the literature how an increased organ supply will benefit recipients. If allowing the sale of organs is the way to increase the organ supply for the benefit of recipients, then, in order to demonstrate that donors will not be exploited, it must be demonstrated how, and if, such sales would benefit those donors. This study explores whether or not one should sell human organs. Using basic models, this study develops economic scenarios and outcomes related to the selling of human organs with particular focus on pricing and profitability in relation to donor benefit. Theoretical outcomes show that the donor will not benefit in the long run.

Container liner shipping companies started expanding their business by investing in container port terminals in the late 1990s. This market entry results in an extensive presence of vertically integrated liners and terminals. This study aims to explore the competition effects of this vertical integration trend based on a regional (European) analysis. In particular, it extracts lessons from the European Commission (EC) cases on the competition effects of vertical integration. The critical analysis of the cases examined at the institutional level intends to reach conclusions on whether liner–terminal vertical integration harmed or advanced competition in the relevant markets and/or the extent that there is a need to revise the current policy practices.

This study critically assesses the EC’s decisional practices in port container terminal vertical mergers in the last 25 years (1997–2021). Based on a literature review comparing maritime and competition economists' perspectives, it reviews the types of mergers examined, the methodology followed for relevant market definition and calculation of market shares and the estimated competition effects. The Hamburg–Le Havre area is the port range used as a case study for comparing the decisional practice with actual market developments. These container ports serve the greatest consuming market of final and intermediate goods in Europe and are gateways to Central and Eastern Europe.

The assessment identifies a need for expanding the investigation as a precondition for reaching conclusions on both the anti- and pro-competitive effects. First, only a limited number of transactions have been notified to the EC. Second, the empirical research identified a gap in this process, as there were no decisions (phase I) on vertical mergers between 2008 and 2016. Third, the exante assessment has not applied a phase II in-depth analysis to any case due to the absence of competition concerns. Finally, due to the absence of complaints, there is a lack of any ex post assessment of the effects of vertical integration.

This assessment is important for understanding the current and emerging features of intra-port and inter-port competition and the potential effects that the continuation and expansion of liner companies' vertical integration strategies will have along maritime supply chains. It also contributes to the broader discussion on liner companies' strategies, such as the research and policy-making efforts around the globe to understand the impact of both vertical and horizontal integration.

These discussions are critical for a diversity of businesses that use liner shipping services or provide facilities and services to container shipping lines or ports. They are important for the interests of customers and consumers as they could inform any needed re-visiting of competition policy to protect from the dominance of any market developments that would lead to conditions limiting competition. Expanding analysis on the competition effects of non-notified mergers would help a better understanding of market changes.

Enhancing competition and limiting monopolies is valuable from a consumer's perspective. This is more so in the case of maritime trade that serves the needs of societies. The study contributes by generating a better understanding of how decision-makers have worked towards that direction and what realignments are worthy.

There are no previous comprehensive reviews and analyses of the ways that policy-makers at the regional level have addressed the competition effects of vertical integration strategies of liner shipping companies when enhancing competition is valuable from a consumer perspective. Comparing maritime economists and competition, the study, via its literature review, also offers a comparison of maritime and competition perspectives on these competition effects, allowing positioning of how effective decisional-making practices have been.

In this study, we develop understanding of factors that shape the propensity of market incumbents to collaborate in response to the threat posed by new market entrants. We are particularly interested in instances when a market's competitive structure becomes unsettled by new entrants who engage in nonconforming strategic tactics. In such situations, we propose two factors – strategic similarity among competitors and market-share instability – will systematically shape competitors' collaborative response to new entrants. To test our theory, we use data on strategic tactics and collaborative dynamics in the US airline industry from 1989 to 2010. We demonstrate that greater strategic similarity among a market's incumbents increases the likelihood of cooperation in response to the threat of a nonconforming new entrant, while greater market-share instability reduces cooperative response. Through this study, we extend existing understanding of the contextual circumstances under which established competitors recognize their mutual interests and band together.

As the wave of liberalization and deregulation have accelerated to relieve rigid controls over airline routes, capacity, and fare setting regimes, Low Cost Carriers (LCCs) have emerged especially in local aviation markets since the 1970s.

This paper has studied the effects of LCC's entry into the domestic aviation market which was pre-occupied by two major carriers, Korean Air (KAL) and Asiana Airlines. Through a simple model describing two situations, prior and post to LCC's entry, we analyzed changes and trends of each airline's output and profit based on the Cournot and two-stage Stackelberg game equilibrium.

In summary, our conclusion consists of five points: (1) Even though JIN Air's entry reduced KAL's respective output and profit, the more JIN Air produces, the higher the joint-profit of KAL and JIN Air is, (2) From the joint-profit aspect, increasing KAL's output to a level than JIN Air's is more profitable on the Gimpo-Jeju route, on the other hand, increasing JIN Air's output higher than KAL's is more profitable on the Jeju-Busan route, (3) Even though JIN Air's entry increase Asiana Airline's output, the more JIN Air produces, the less Asiana Airlines's profit is, (4) Total output in markets as well as total profits of firms will increase under certain conditions, (5) KAL and JIN Air tend to get caught in an unresolved conflict on level of LCC cost.