CIE AS/A Economics Chapter 36≡ Contents

Chapter 36 — Growth and Survival of Firms

Cambridge International AS & A Level Economics (9708) · Unit 8.2 · 4th edition coursebook

Learning objectives

  • Explain reasons for the different sizes of firms.
  • Explain the difference between internal and external growth of firms.
  • Analyse the methods, reasons and consequences of integration (horizontal, vertical, conglomerate).
  • Analyse the conditions and consequences for an effective cartel.
  • Discuss the principal-agent problem.

Key terms

conglomerate
A company with a large number of diversified businesses.
economies of scope
Where a reduction in average total cost is made possible by a firm changing the different goods it produces.
diversification
Where a firm grows through the production or sale of a wide range of different products.
horizontal integration
Where a firm merges or acquires another in the same line of business.
vertical integration
Where a firm grows by producing backwards or forwards in its supply chain.
principal-agent problem
Where one person (the agent) makes decisions on behalf of another person (the principal).

36.1Reasons for different sizes of firms

Most economies are dominated numerically by small firms. The great majority employ fewer than ten people, and the share is usually even higher in low and middle-income countries. Small firms cluster in services, retail, food production, and personal and business services, and a growing number of small knowledge- and research-intensive firms supply larger manufacturers. The persistence of small firms alongside very large multinational companies has several explanations:

Why large firms grow

For large firms, growth is closely linked to the pursuit of profit. The main motives are:

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36.2Internal and external growth of firms

Firms can grow in two main ways. Internal growth happens when a firm retains some profit rather than paying it out to owners and invests it back into the business to increase productive capacity. This is most likely in capital-intensive activities where the market is expanding, and is influenced by the stage of the business cycle: most investment occurs as the economy approaches a boom. External growth involves combining with other businesses through takeovers or mergers. A takeover means buying enough shares (51% or more) to gain control of another firm; a merger has the same final result but implies an agreed combination rather than a struggle. Mergers tend to be more common during downturns or in shrinking markets where firms are left with surplus capacity.

Both routes can occur at the same time. External growth is often a quicker and cheaper way to expand than internal growth, especially where fixed costs are high — for example, it may be cheaper for one oil company to buy the assets of another than to expand its own operations, and the risks may be lower.

Diversification is a related route in which a firm produces or sells a wide range of different products. The motives are to spread risk and to exploit new market opportunities. Large diversified groups are conglomerates: each subsidiary is independent with its own board of directors, but the group spans many unrelated industries.

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36.3Integration

Integration is a term widely used in economics. In this context, it refers to the ways in which the individual parts of a firm have come together. This could be through:

Three methods of integration can be identified: horizontal integration, vertical integration (which has both backward and forward forms) and conglomerate growth (sometimes shown alongside as 'lateral integration' when the new business is in an only loosely related area). The routes can be pictured as a chain running from raw material or component suppliers (upstream), through manufacturing in the middle, to retail outlets (downstream). Backward vertical integration moves a firm up the chain towards suppliers; forward vertical integration moves it down the chain towards retail; horizontal integration combines firms at the same stage of the chain; and conglomerate/lateral integration adds activities outside the chain altogether.

Horizontal integration

Horizontal integration is a process or strategy used by firms to strengthen their position in an industry. It involves the merger or acquisition of a business that is in the same sector of an industry. In such cases, the outcome is one of expansion. The prime motive is to reap the benefits of economies of scale: research and development costs can be pooled, production plants can be rationalised, marketing costs reduced and so on. Horizontal integration can also lead to access to new markets, increased market power and, by reducing competition, the opportunity to make supernormal profits. The danger is that this sort of growth may sometimes be blocked by governments concerned about possible monopoly abuse.

Vertical integration

Vertical integration is different. This is where a firm grows by moving into a forward or backward stage of its production process or supply chain. Forward vertical integration is where a manufacturer moves into retail. Backward vertical integration is where a manufacturer takes control over some of its supplies. Vertically integrated firms may operate across design, manufacturing, software and retail, or own the production of raw materials as well as their processing and distribution. The benefits of vertical integration include improved security and quality of supplies and reduced supply-chain costs. There are, however, disadvantages, such as higher costs if the newly acquired businesses are not effectively integrated. This can be a major problem with any merged operation. To avoid confusion, it helps to think about the two types of integration in terms of the meaning of horizontal (across) and vertical (up and down).

Conglomerate integration

The external growth of a conglomerate differs from the two forms of integration above in that growth comes from the purchase of unrelated businesses. The rationale is to spread risk. Each of the companies in a conglomerate is independent with its own board of directors. Many conglomerates are multinational companies. One benefit of a conglomerate is that losses from poorly performing subsidiaries can be offset by profits from elsewhere in the group. If losses persist then the subsidiary can always be sold. A criticism is that the diversity of a conglomerate means that the group can be difficult to manage strategically.

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36.4Cartels

As introduced in Section 35.3, a cartel is a formal agreement between firms in an industry to limit competition. The agreement may involve fixing the quantity to be produced by each cartel member or by fixing the price at which the product is sold. Other restrictions may also be applied. A cartel acting in unison maximises profits in the same way as a monopolist - it restricts output and raises price so that the combined profit of its members is at its greatest.

OPEC as an example of a cartel

The Organization of the Petroleum Exporting Countries (OPEC) is the best-known and longest-standing example of a cartel. Membership is open to any country that is a substantial net exporter of crude petroleum, and the organisation has expanded its market power by seeking to control prices in cooperation with other large exporting countries outside the original group. OPEC and its wider grouping account for a large share of the world's oil output and an even larger share of known crude oil reserves, plus substantial reserves of natural gas. This means the group clearly has considerable power in the market to determine not only current prices but, significantly, future prices.

OPEC's market power, while still substantial, is far less than it was at its peak when it had a near-monopoly hold over the global supply of oil. A few large exporters remain the most powerful voices within the organisation. The power of the cartel has decreased as other producing economies have obtained oil from unconventional sources such as shale and from offshore drilling. As the world's biggest oil-producing economies increase their volumes from these sources, OPEC's leverage is offset. Its economic power will weaken further if new suppliers emerge from outside the cartel, or if consumers take action that reduces consumption - for example, technology providing alternatives to oil such as electric vehicles and other innovations in transport. OPEC has denied that it acts as a single monopoly cutting output in order to charge high prices, and has pointed out that consuming-country governments often earn more from taxes on oil than producing countries do from selling it.

At the retailing end of the industry, supply is in the hands of an oligopoly of oil companies which deny that they are charging too much, insisting that profit margins are low because of fierce competition; total profits are high only because of the large turnover. Some analysts predict that there will be further horizontal integration between oil companies that are already vertically integrated. The oil industry will continue to be dominated by a few big players, mainly because of the high fixed costs and risks associated with exploration and drilling. If controversial attempts to find oil in environmentally sensitive areas are successful, OPEC's power could diminish further.

Conditions for an effective cartel

The long-term survival of a cartel depends upon high barriers to entry - without them, supernormal profits would attract new producers and the cartel would lose control of supply. Beyond barriers to entry, several conditions support an effective cartel: members must keep to the agreed quotas or prices in full; a dominant member with the power to bring others into line is useful; members ideally have similar costs, so the agreed price gives all of them an acceptable profit margin; and the cartel must not face legal prohibition.

Threats to a cartel

Several factors threaten a cartel:

The Prisoner's Dilemma also applies to a cartel: each member has an individual incentive to break ranks and produce above its quota even though all members are worse off if all do so. Disagreement over the target price or the production quotas allocated to each member is another recurring source of weakness. Time is part of the story: cartels that once held enormous market power can find that the economic conditions which gave them that power have changed, and even long-established examples have collapsed. Cartels set up in agricultural markets, for example, have historically broken down. It is a matter of debate how long any particular cartel can survive.

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36.5The principal-agent problem

Decisions about growth presuppose that whoever takes them has the authority to do so. In small firms this is usually the owner or partners, who agree how growth will or will not happen. In larger firms with many shareholders, ownership and management are separated, and a gap can open between the decision-makers and the owners. This is the principal-agent problem: one person (the agent) makes decisions on behalf of another (the principal).

The agent is involved day to day and so has more information than the principal - an example of asymmetric information and moral hazard. The principal does not know exactly how the agent will act and cannot be sure the agent will act in the principal's interests. In decisions about growth, the agent may pursue strategies that suit their own career and prestige rather than maximising shareholder returns. The principal is not fully aware of what the chosen growth plans involve; the resulting loss to the principal is the agency cost.

The principal-agent problem is therefore a form of market failure rooted in information failure. Principals should be best placed to determine a firm's future growth, but they often are not, and this leads to a misallocation of resources.

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End-of-chapter practice

Past-paper questions from CIE 9708. Pick A, B, C or D. Answers are saved on this device — press Download report (PDF) at the top to save them.

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Your score for Chapter 36
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Self-evaluation checklist

After studying this chapter, you should be able to:

  • Explain the reasons for different sizes of firms.
  • Understand that firms may grow internally or externally.
  • Analyse the methods, reasons and consequences of integration for firms: horizontal, vertical, conglomerate.
  • Explain the purpose and consequences of cartels.
  • Discuss the principal-agent problem and the impact this may have on the firm.