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Characteristics advantages and disadvantages of a Monopoly

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I. Introduction

Markets are the heart and soul of a capitalist or free market economy which is based on the notion of competition. Varying degrees of competition ultimately lead to different market structures with different outcomes to the market. The main market structures are perfect competition, monopolistic competition, oligopoly and monopoly, each with a different outcome to the market which leads economists to consider some market structures to be more desirable for the society such as perfect competition while others are less desirable such as Monopoly.

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It is often argued that monopoly restricts competition through entry barriers and therefore should not be allowed. This is often supported by a strong case against monopoly as it restricts consumer choice and prevents small innovative businesses from being established. In addition, a monopoly will produce at a lower output and charge higher prices than a competitive market, with the same cost structure. This will lead to a loss of economic welfare and efficiency. However, if we assume that monopolies are always bad then it will raise questions of why firms seek to be monopolies and why do governments accept or tolerate monopolistic firms.

In theory monopoly is a market structure with only one firm – the industry demand curve is the firm’s demand curve – that dominates and sets price and quantity of the good. It is assumed in monopoly that there are no substitutes and thus a firm is a price-maker who is motivated by profit maximisation and is supported by restrictive barriers to entry of the market that subsequently prevents competition.

In reality a theoretical monopoly is most unlikely as it is rare to find a market in which some form of substitute firm or product does not exist. As a result, the Competition Commission in the UK defines a market as being monopolised if there is a firm possessing over a 25% market share and facing no significant competition.

In order to evaluate monopoly and to determine whether it should be allowed or not, it is vital to understand the characteristics of monopoly and to apply various efficiency concepts such as productive efficiency, allocative efficiency and X-efficiency to both extremes of the market structure, perfect competition and monopoly, to understand their effect on both consumer and producer surplus in the form of households and firms which consequently affect the general economic welfare.

II. Characteristics of Monopoly

There are various characteristics of monopoly but it is mainly distinguished from other market structures by its barriers to entry. These barriers are a variety of obstacles or boundaries that prevent other firms from breaking into the monopolistic firm’s market, thus allowing the monopolistic firm to maintain its monopoly and therefore continue to earn supernormal profits.

Sloman (2010) suggests that barriers to the entry of new firms are a must for an existing firm to maintain its monopoly position. There are a number of entry barriers that would exist in a market in different forms such as economies of scale, economies of scope, legal patents, licences, product differentiation and high start-up costs.

Economies of scale are considered as one major barrier, this occurs when a reduction in unit costs depends on the output size. In such case, a large firm is most efficient and new firms cannot afford to enter the market and gain market shares. The industry may not be able to accommodate more than one producer which is known as natural monopoly. This is the case with public utilities such as water, gas, electricity where these firms have economies of scale to prevent new firms from entering the market.

Economies of scope is another barrier as firms who produce a range of products are likely to achieve lower average costs of production and undercut prices to drive new firms out of the market. Proctor & Gamble enjoys economies of scope as it produces hundreds of products but could afford to hire expensive skilled workers and experts who can use their skills across the product line and therefore spread the costs and lower the average total cost for each product. (Alesina and Spolaore, 2005)

Patents and licences are also considered main entry barriers. The US Patent and Trademark office issues patents for 20 years period, in accordance with the 1995 GATT agreement. (USPTO, 1995)

These patents give an inventor the exclusive right to produce a product for a 20 years period such as the case of the pharmaceutical giant, Pfizer, which has a patent on Viagra until 2014. (Stevens, 2007)

Likewise, licences are granted by governments which allow one or a few firms to operate in a specific market under government regulations and control.

Product differentiation and brand loyalty where a firm produces a differentiated product and the consumer associates that product with the brand.

An example of product differentiation would be the car industry, where different firms would produce substitutes but they are not considered as perfect substitutes as required in perfect competition, so each firm would have some form of monopoly power in its product category. This is clearly evident in the luxury sport cars market such as Ferrari, Porsche and Lotus.

Other forms of entry barriers may include high start-up costs for new firms in comparison with an established monopoly firm which is likely to have gained enough experience and efficiency techniques to be able to reduce costs and hence prices for any potential new firms to be able to compete.

Based on the characteristics of monopoly, it is important to evaluate its economic efficiency and therefore its effect on consumer surplus and social welfare in general. In the next section, we compare the economic efficiency of both extremes of the market structure.

Economic efficiency

In economic terms, monopoly and perfect competition should be judged on the extent to which they contribute to improving the human wellbeing and social welfare, therefore, it is important to assess whether the market structure is efficient or inefficient.

Nellis and Parker (2006) point out that the success or failure of firms is directly affected by the extent to which they are managed efficiently. The lower the cost per unit of output, without reducing the quality of the product, the higher the economic efficiency of a firm.

This is clearly evident in a competitive market where firms strive to be economically efficient in order to survive. However, this is not the case in a monopoly which is generally considered as an inefficient market structure. This can be clarified by the following analysis of various economic terms of efficiency.

Allocative efficiency

Assuming an initial distribution of income and wealth, allocative efficiency occurs at the point when it is impossible to improve overall economic welfare by reallocating resources between markets.

For the whole economy to be allocatively efficient, price must equal marginal cost in every market. However, it is unlikely that a monopoly seeking profit maximisation would be allocatively efficient. A monopoly is more likely to restrict output below the market equilibrium to force up the prices.


Welfare loss

MR AR=Industry demand=MU

Q2 Q1 Output

Figure 1 – Allocative efficiency and welfare loss

The allocatively efficient output is Q1 where P=MC. At this output, Mu=MC, which means that all units produced add more to welfare (MU) than the resources they cost to make (MC). This is the free market equilibrium. A monopolist will seek to maximise their own profits and will produce at Q2 where MC=MR. As a result, some units that would have been beneficial to society (having MU>MC) are no longer produced, resulting in an overall welfare loss.

Productive efficiency

This can only be achieved if a firm uses the available techniques and factors of production at the lowest possible cost per unit of output.

Richard Lipsey states that in the context of an industry, the interpretation of productive efficiency is that firms are operating so that costs are minimized. (Lipsey and Harbury, 1992)

In monopoly, in contrast to perfect competition, there are no competitive forces that would make a firm hold costs down to a minimum.






Q2 Q1 Output

Figure 2 – Productive efficiency

The productively efficient output is Q1, the minimum point of the AC curve. At this output, unit costs are C1, meaning that the least amount of scarce resources possible are being used per unit of output. A monopolist is unworried about this, because higher costs can be passed on to the consumer to at least an extent. Therefore the monopolist will produce at Q2, the profit maximising output, incurring costs of C2 per unit.


The concept of x-efficiency requires that the lowest possible prices are paid for inputs or factors of production.

However, there is less incentive for a monopoly to make full use of the available technology and management techniques, mainly due to lack of competition.

Monopolies are more likely to be technically and productively inefficient, incurring unnecessary production costs and wasted resources.

A firm could be employing too many workers or investing in machines that are never used, deeming it technically inefficient. It could be paying its workers unnecessary high wages or buying capital or raw material at unnecessary high prices.

This means that the monopolist’s LRAC is above that which would be technically possible, therefore resources are wasted.


LRAC monopoly

LRAC possible

= X-inefficiency


Figure 3 – X-efficiency gap

The x-inefficiency gap, as shown in figure 3, is considered as unnecessary production costs that a firm can reduce.

In a perfectly competitive market, a firm must eliminate any form of x-inefficiency in order to survive and to make normal profits.

However, this is not the case with monopoly, which are able to survive while incurring unnecessary production costs and making satisfactory rather than maximum profits.

The evaluation of economic efficiency of a monopoly compared to perfect competition has highlighted a number of disadvantages to support economists’ case against monopolistic firms.

IV. Disadvantages of Monopoly

In general, a monopolistic market structure would produce less output and charge higher prices which leads to a decline in consumer surplus and a deadweight welfare loss. The higher prices would lead to allocative inefficiency and supernormal profits, leading to reduced benefits to consumers and unequal distribution of income.

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This also raises a question about equity. The higher prices would exploit low income consumers and their purchasing power might be transferred to shareholders in the form of dividends. This will again lead to unequal distribution of income.

A monopoly is likely to be less motivated towards economic efficiency such as cutting costs or increasing productivity. There is also a possibility that a monopoly would experience diseconomies of scale as the higher it gets bigger, their average costs increase.

Further more, the lack of competition could discourage a monopoly from investing in research and development, leading to lack of innovation and worse products.

However, with all the evidence against monopoly, there are still the questions of why do monopolies still exist, why firms seek to be monopolies and why do governments tolerate them?

V. Advantages of monopoly

On economic terms, perfect competition is generally regarded as more desirable than monopoly. However, monopolies are not necessarily a bad thing, considering they are as highly motivated and public-spirited as much as competitive industries.

Economic theory assumes that everyone is motivated by self-interest; this applies to competitive markets as much as it applies to monopolies.

Firms in competitive markets would very much like to be a monopoly by eliminating competition but this is unlikely to be achieved due to market forces and the absence of barriers to entry and exit.

The fact that monopolies make supernormal profits allows them to invest in research and development. It also allows them to fund high cost investment spending into new technology. This is likely to result, if successful, in improved products and lower costs on the long run.

An innovative monopoly could therefore be considered dynamically efficient over a long term as it reaps the reward of investment in research and development. Microsoft did not start as a monopoly but the introduction of Windows version 3.0 in 1990 followed by various Microsoft Office applications provided the market power to become a monopoly. Their position as a monopoly was further cemented by the continuous investment in research and development.

It is generally argued that monopoly in high technology sectors is a good thing as it provides firms with a greater incentive to invest in research and development. Patents for new ideas are normally acceptable as it encourages firms to fund the initial research and development and it allows these firms to recoup their investment.

Another advantage of monopoly is economies of scale. An increased output would lead to a decrease in average costs of production, which can be passed to consumers in the form of lower prices. Likewise, cutting prices would be an advantage for a monopoly as it would increase sales and maximise economies of scale.


S (Perf comp) =€ “C



LRMC (monopoly)

D industry

Qpc Qm

MR (monopoly)

Figure 4 – Market equilibrium under monopoly

As shown in figure 4, the market is initially in perfect competition, and is in equilibrium at Qpc, where supply = demand. If a monopoly took over this market, in the long run, they would be able to rationalise all the individual factories, and generate economies of scale, driving down marginal costs to LRMC. The profit maximising output would now be Qm, and to sell this, a price of Pm would be needed – lower than in perfect competition because of the huge economies of scale. Therefore both consumer and producer are benefiting in this case – profits and consumer surplus are both higher than they would have been under perfect competition.

Other arguments in favour of monopoly are that a domestic monopoly may be needed to generate the economies of scale needed to compete on the world market. BT’s domestic monopoly in the 1980s allowed it to invest heavily in telephone systems technology which gave it a major share of the world market in telephone exchanges, boosting the UK’s current account on the balance of payments.

VI. Conclusion

Despite the fact that monopoly produces less output at higher prices and the negative implications on consumer surplus and social welfare, nevertheless, the existence of monopolies are inevitable as long as firms seek profit maximisation as well as increased market share and ultimately market dominance.

In a free market economy, the chances of supernormal profits will eventually encourage other firms to attempt to break into a monopolistic market. The threat of competition or even a financial threat of a takeover will force a monopoly to become highly economic efficient. The American economist William Baumol argues in his theory of contestable markets that a monopoly may be forced over time to make the same production and pricing decisions as a competitive market would, merely due to the possibility of future competition. (Griffiths and Ison, 2001)

From the above analysis, it is easy to conclude that perfect competition is productively more efficient than monopoly. However, if we take into account the substantial economies of scale that a monopoly would have, then it is more likely that a monopoly is more productively efficient than competition. In some cases, such as a natural monopoly, it is more acceptable to have just one firm as a monopoly provided that its price and productivity are regulated.

Von Mises (1966) concludes that the mere existence of monopoly does not mean anything. The publisher of a copyright book is a monopolist, but he may not be able to sell a single copy, no matter how low the price he asks. Not every price at which a monopolist sells a monopolized commodity is a monop­oly price. Monopoly prices are only prices at which it is more advantageous for the monopolist to restrict the total amount to be sold than to expand sales to the limit which a competitive market would allow.

Although monopoly is not desirable as it restricts competition and causes a reduction in consumer surplus and social welfare, it is however inevitable in a real business market that a firm would often take advantage of its strong market position to control the supply of goods or services. Monopolies are not illegal but their abuse of market power to limit competition is illegal and therefore actions by governments to regulate the market would be required.

Finally, all firms are concerned with determining the price level that would give them sufficient profit while maintaining the consumer’s attraction and demand. This should work in the benefit of consumers and the society if regulations are in place for governments to intervene when a firm abuses its monopoly power to the detriment of consumers.


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