Introduction

A market structure is the number and size of buyers and sellers who are interested in a product or service. Apart from buyers and sellers involved in the market, market structures for a commodity also include the likely entrants. Because of the differing level of competition within the market, different market structures emerge with varying effects in the market.

Thus, Firms have to know not only about costs but also about revenues when they make pricing and output decisions. To recognize, for instance, the relationship between output, taxes, and price, a firm has to know the structure of the market or industry in which it is selling its product (Maurice & Thomas, 2008).

There are various market structures, all dependent upon the extent to which buyers and sellers can assume that their buying and selling decisions do not affect their price. This paper discusses the following market structures: competitive markets, monopolies, and oligopolies. Based on their differences, the article looks at the characteristics, economics in terms of profit maximization, and the role of each market form.

Types of Market Structures

Perfect Competition

At one stage, when buyers and sellers correctly assume that they cannot affect the market price, the market structure is one of perfect competition. A perfectly competitive market structure assumes the following characteristics: 1. The product that is sold by the firms in the industry is homogeneous. 2. Any firm can enter or exit the trade without any severe impediments. 3. There must be a significant number of participants in the market who do not influence the price individually, and 4. There must be complete information; both buyers and sellers must know about market price, product quality, and cost conditions (Maurice & Thomas, 2008).

In essence, a perfectly competitive firm is one that is such a small part of the entire industry in which it operates, and that it cannot significantly affect the product in question.

Economics and Role of Perfect Competition

A perfectly competitive market structure results in various judgments regarding solutions to some economic problems, such as how much is produced, the price charged, and methods of production. Since an individual firm has to accept the price set by the market, the supplier must determine the quantity to produce as per the available amount.

A supplier will provide the amount that maximizes the profit of the firm; this is where the marginal cost of production equals the market price. Thus, the entire output of all firms in the market establishes the supply of the commodity.

This market supply of the merchandise, together with the aggregate demand of the product by all buyers, determines the price of the market. For a firm to capitalize on profits, it has to consider the cost and revenue. If the marginal income exceeds the minimal value, a firm will continue to produce. A firm stops to provide when marginal revenue is equivalent to marginal cost, hence profit maximization (Case & Fair, 1999).

Perfect competition is desirable in society since the price charged to people equals the marginal cost of production of every supplier. It ensures that consumers are charged at a reasonable price. Another importance is that the collective output in this market structure is more significant than other market forms. In essence, perfect competition ensures democracy since no single firm can dominate the market.

Monopolistic Competition

Monopolistic competition is described by the existence of many sellers, just like the perfect competition. However, this market structure is also characterized by the presence of differentiated products.

In essence, the products produced are not termed as identical due to different compositions, changes in packaging, and different brand image or advertising. Consequently, a monopolistic competitive market is characterized by ease of entry into the industry (Maunder et al., 2000).

Economics and Role of Monopolistic Competition

A firm in this market structure produces the amount that maximizes its profit. More so, the firm stops supplying when marginal revenue coincides with the marginal cost of production. However, individual firms can determine the price of their products because of the existence of different product range in the market.

This price marking power is considerably small, as there are many firms in the market. Because the price is a determinant of demand, the price charged for a commodity is different from the marginal revenue of the product. The net result of maximizing profit in this market structure is that prices are relatively high.

The monopolistic competition gives firms the power to set prices for their products, and in doing so, the expense associated with a product is considerably higher than the marginal cost. In addition, this market structure ensures that there is fairness in the industry.

Oligopoly

Oligopoly is characterized by the interdependence of companies in the industry. This is because of a few firms in the business. As contrasted with monopolistic competition, when a company in an oligopoly market structure alters its price or output, it has diverse results on its competitors in regard to its revenue. In addition, an oligopoly structure experiences the concept of economies of scale.

This implies that when the level of production rises, the cost per unit of product reduces for the use of any plant (Maunder et al., 2000). This is an advantage for a larger supplier. Consequently, there is a huge barrier to entry in this market structure because of large financial needs, accessibility of raw materials, and convenience of the required technology.

Economics and Role of Oligopoly

Output and pricing in oligopolies vary because of many theoretical frameworks that describe the markets. For instance, if a firm reduces its price, competitors settle this by cutting their prices. Though, if it increases its price, competitors may not match the price.

Thus, prices in an oligopolistic market structure may be constant for a long period of time. Therefore, oligopoly is desirable because it provides fair competition in the market since most firms in the industry do not collude.

Monopoly

This is the converse of perfect competition, in which only one seller controls the output and pricing decisions of a product.

A monopoly can be enacted by the government or if the company owns the whole supply of required raw material. Thus, there is no competition in this market structure. In the case of new entrants, monopoly blocks entry of new firms, especially by law or large financial requirements.

Economics and Role of Monopoly

Same as the monopolistic competition, a monopolistic company capitalizes on its profit by supplying until the marginal revenue is similar to the marginal cost. A monopolistic firm can increase the number of sales by reducing its price and inducing buyers.

Monopoly plays a major role in regard to price regulations by the government. In the case of natural monopoly, this market structure is considered desirable to the economy since a firm is able to survive in the market (Case & Fair, 1999).

Conclusion

Markets are the important aspects of a capitalist economy, and different degrees of competition result in various market structures. This paper has discussed different market structures and their strategies in maximizing profits.

The market structures analyzed include competitive markets, monopolies, and oligopolies. Competitive market structures are featured by a large number of firms; these firms have less or no control of the market price. Firms can easily enter a competitive market.

Competitive firms produce up to the level where there is profit maximization, and thus the price is determined by the demand of buyers. In an oligopoly, only a few companies produce a product. Therefore firms can have less price control.

In the case of a monopoly, there is only one seller who also determines the price. In this case, oligopolistic and monopolistic markets experience high barriers to entry of new firms. These barriers include huge investment, accessibility of raw materials, desirable technologies, and government regulations.

References

Case, K.E. & Fair, R.C. (1999). Principles of Economics. 5th Ed. New Jersey: Prentice Hall.

Maunder, P., Myers, D., Wall, N., & Miller, R. (2000). Economics Explained. London: HarperCollins Publishers.

Maurice, S. & Thomas, C. (2008). Managerial Economics. 9th Ed. New York: McGraw-Hill.

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