Market and Market Structures Assignment help






In economics, market structure (also known as the number of firms producing identical products.)

  • Monopolistic competition, also called competitive market, where there are a large number of firms, each having a small proportion of the market share and slightly differentiated products.
  • Oligopoly, in which a market is dominated by a small number of firms that together control the majority of the market share.
  • Duopoly, a special case of an oligopoly with two firms.
  • Oligopsony, a market, where many sellers can be present but meet only a few buyers.
  • Monopoly, where there is only one provider of a product or service.
  • Natural monopoly, a monopoly in which economies of scale cause efficiency to increase continuously with the size of the firm. A firm is a natural monopoly if it is able to serve the entire market demand at a lower cost than any combination of two or more smaller, more specialized firms.
  • Monopsony, when there is only one buyer in a market.
  • Perfect competition is a theoretical market structure that features unlimited contestability (or no barriers to entry), an unlimited number of producers and consumers, and a perfectly elastic demand curve.

The imperfectly competitive structure is quite identical to the realistic market conditions where some monopolistic competitors, monopolists, oligopolists, and duopolists exist and dominate the market conditions. The elements of Market Structure include the number and size distribution of firms, entry conditions, and the extent of differentiation.

These somewhat abstract concerns tend to determine some but not all details of a specific concrete market system where buyers and sellers actually meet and commit to trade. Competition is useful because it reveals actual customer demand and induces the seller (operator) to provide service quality levels and price levels that buyers (customers) want, typically subject to the seller’s financial need to cover its costs. In other words, competition can align the seller’s interests with the buyer’s interests and can cause the seller to reveal his true costs and other private information. In the absence of perfect competition, three basic approaches can be adopted to deal with problems related to the control of market power and an asymmetry between the government and the operator with respect to objectives and information: (a) subjecting the operator to competitive pressures, (b) gathering information on the operator and the market, and (c) applying incentive regulation.

Quick Reference to Basic Market Structures
Market Structure Seller Entry Barriers Seller Number Buyer Entry Barriers Buyer Number
Perfect Competition No Many No Many
Monopolistic competition No Many No Many
Oligopoly Yes Few No Many
Oligopsony No Many Yes Few
Monopoly Yes One No Many
Monopsony No Many Yes One

The correct sequence of the market structure from most to least competitive is perfect competition, imperfect competition,oligopoly, and pure monopoly. The main criteria by which one can distinguish between different market structures are: the number and size of producers and consumers in the market, the type of goods and services being traded, and the degree to which information can flow freely.


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