Economics - Term 2 - Week 10

Picture yourself standing in line at a busy Soweto minibus taxi rank, deciding whether to buy a snack from Thandi’s spaza shop or from a street vendor. Each business you encounter—whether it’s the local spaza, a Pick n Pay supermarket, or a hawker—operates under different market conditions. These conditions, called market structures, shape the prices you pay, the variety you see, and even the quality of goods available. Market structure refers to how many businesses sell similar products, how easy it is for new businesses to enter, and how much control each business has over price. For example, a spaza shop faces fierce competition and can’t set high prices, while a supermarket chain might have more influence. Understanding market structures helps you see why some goods are cheap, why some shops thrive, and why others close. This knowledge is crucial for making smart consumer choices and for tackling exam questions that ask you to analyse real-life business scenarios.

Think about the fresh produce sellers at a taxi rank in Polokwane. There are many sellers, each offering similar tomatoes and potatoes. No single seller can set a price much higher than the others, because buyers can easily switch. This is perfect competition: many small businesses, identical products, easy entry and exit, and no control over price. A common misconception is that perfect competition exists everywhere, but in reality, it’s rare. Most markets in South Africa have some differences in products or barriers to entry. Perfect competition is an ideal type, useful for understanding how prices are set when no one has market power. For example, if one tomato seller tries to charge R15 when everyone else charges R10, customers will simply walk to the next stall. This keeps prices low and fair, but it also means sellers must work hard to attract buyers, often by offering fresher produce or better service.

During load-shedding, you might complain about Eskom. Eskom is a monopoly: it’s the only major supplier of electricity in South Africa. In a monopoly, one business controls the entire market, sets prices, and faces no direct competition. Monopolies often exist because it’s too expensive for new competitors to enter, like building a national electricity grid. Some learners think all big companies are monopolies, but size alone doesn’t make a monopoly. The key is being the only supplier. For example, even though Shoprite is a big supermarket, it competes with Pick n Pay and Spar, so it is not a monopoly. Monopolies can lead to higher prices and less choice, but sometimes they are necessary for services that require huge investment. Eskom’s monopoly means it can set prices (with government oversight), but it also means consumers have few alternatives when problems occur.

Step 1: Identify the product and number of sellers. Thandi’s spaza shop in Soweto sells bread, milk, and snacks, just like many other shops nearby. Step 2: Check if products are identical. Most spaza shops sell similar brands and types of goods, such as Albany bread or Clover milk. Step 3: Consider entry and exit. New spaza shops can open or close easily, as there are few legal or financial barriers. Step 4: Assess price control. Thandi can’t raise prices much above her competitors, or she’ll lose customers to the shop next door. Final answer: Thandi’s spaza shop operates in a market close to perfect competition. Sanity check: Many sellers, similar products, and easy entry all point to perfect competition, even if not every detail is perfect in real life.

Step 1: Identify the number of sellers. Eskom is the only major supplier of electricity in South Africa, so there is just one seller. Step 2: Check for substitutes. There are few practical alternatives for most households, as solar panels and generators are expensive. Step 3: Assess barriers to entry. Building a power grid is extremely expensive and regulated by the government, making it nearly impossible for new firms to enter. Step 4: Consider price control. Eskom can influence prices, subject to government regulation, because there is no direct competition. Final answer: Eskom is a monopoly. Sanity check: If there’s only one supplier, high barriers to entry, and no close substitutes, it’s a monopoly.

Step 1: List the firms. Mobile: Vodacom, MTN, Cell C (few); Fast food: Nando’s, KFC, Chicken Licken, local shops (many). Step 2: Examine product differences. Mobile: similar services, some brand differences; Fast food: similar but each has unique recipes and branding. Step 3: Entry barriers. Mobile: high (infrastructure, licenses); Fast food: lower (franchises, local start-ups can open). Step 4: Price control. Mobile: some, but limited by competition; Fast food: more flexibility to set prices and run promotions. Final answer: Mobile networks are an oligopoly, fast food is monopolistic competition. Sanity check: Few vs. many firms is the key, along with how easy it is to start a new business.

Question: Are minibus taxi operators in Mthatha an example of perfect competition? Let’s think: There are many taxis, all offering similar transport on the same routes. No single operator can set a much higher fare because passengers will choose another taxi. Entry is possible, but there are some rules and associations that control who can operate. Worked response: This market is close to perfect competition, but with slight barriers (permits, associations) that make it not perfectly competitive. Similar question: Is the petrol industry in South Africa perfectly competitive? Answer: No, because a few large companies dominate and prices are regulated by government, which is more like an oligopoly.

Question: Which market structure best describes supermarkets like Shoprite, Pick n Pay, and Spar in Durban? Let’s break it down: There are a few big chains, each with many branches across the city. Products are similar but not identical—each supermarket has its own brands and specials. Entry is possible but expensive, as opening a new supermarket requires a lot of capital. Worked response: This is an oligopoly, because there are a few dominant firms and high barriers to entry. Similar question: What about street food vendors outside the stadium? Answer: Closer to perfect competition, as there are many sellers with similar products and easy entry.

Question: Why can’t Thandi’s spaza shop set much higher prices than her competitors? Model thinking: Many shops sell the same items nearby, so if she raises prices, customers will go elsewhere. Worked response: In perfect competition, businesses have little price control because products are similar and buyers can switch easily. This keeps prices low and competitive. Similar question: Why can Vodacom charge more for certain data bundles than smaller networks? Answer: Oligopoly allows some price control due to fewer competitors and strong brand loyalty among customers.

1. List two features of perfect competition, such as many sellers and identical products. 2. Name one example of a monopoly in South Africa, like Eskom. 3. State whether fast food outlets are an oligopoly or monopolistic competition, and give a reason for your answer. Make sure to use examples from your own community to support your answers, and explain your reasoning in one or two sentences for each.

1. Explain why it’s difficult for new companies to compete with Eskom, considering costs and regulations. 2. Compare the number of firms in monopolistic competition and oligopoly, using local examples. 3. Classify the South African mobile network industry and justify your answer. For each, write at least two sentences, and include a real South African example to support your explanation.

1. Analyse how market structure affects the price of bread in your community, considering the number of sellers and product similarity. 2. Justify why supermarkets are not perfectly competitive, using evidence from their operations. 3. Predict what might happen to prices and consumer choice if a new electricity provider entered the market. For each task, write a short paragraph (3–4 sentences) using examples from your area or current news.

• Perfect competition
• Monopoly
• Oligopoly
• Monopolistic competition

Answer: Perfect competition

There are many sellers with similar products and little price control. Oligopoly and monopoly have fewer firms, and monopolistic competition has more product differentiation.

• Many sellers
• Identical products
• Single seller
• Easy entry

Answer: Single seller

A monopoly is defined by having only one seller in the market, which gives it significant power over prices. The other options describe features of other market structures, not monopoly. Many learners confuse 'big' companies with monopolies, but the key is being the only supplier.

• Eskom
• Vodacom, MTN, and Cell C
• Street food vendors
• Local spaza shops

Answer: Vodacom, MTN, and Cell C

These are few large firms dominating the mobile market, which is characteristic of an oligopoly. Eskom is a monopoly, and the other options have many small sellers.

• She has a monopoly
• There are many similar shops nearby
• She sells unique products
• Government sets her prices

Answer: There are many similar shops nearby

Competition from similar shops prevents her from raising prices. If she charges more, customers will go to other shops. Monopoly and government regulation do not apply here.

• Perfect competition
• Monopoly
• Oligopoly
• Monopolistic competition

Answer: Oligopoly

Oligopolies often compete through advertising, as seen with mobile networks and banks. In perfect competition, advertising is rare because products are identical, and monopolies have no direct rivals to advertise against.