Understanding Oligopoly: Between Competition and Monopoly

Walk into any mobile store in India, and you’ll notice something curious – whether you pick Jio, Airtel, or Vodafone Idea, the data plans are strikingly similar in price. No one company is a monopoly, yet there are clearly very few players calling the shots. This is the defining nature of an oligopoly – a market structure that sits between the extremes of perfect competition and monopoly, and one that shapes consumer experiences across some of India’s most critical industries.

What is an oligopoly? 🔗

The word “oligopoly” comes from the Greek words oligos (few) and polein (to sell). It refers to a market dominated by a small number of large firms, where each firm holds a significant share of total output and the actions of one directly affect the others. Unlike perfect competition, where no single seller can influence the market price, firms in an oligopoly wield considerable pricing power – and they know it.

The exact number of firms is not fixed by definition, but the key feature is that the market is concentrated enough for each firm’s decisions on pricing or output to trigger a measurable response from rivals. This creates a condition economists call strategic interdependence – firms must constantly watch and anticipate each other’s moves.

Key features of an oligopolistic market 🔗

Few dominant firms 🔗

In an oligopoly, a handful of firms produce a substantial share of total industry output. In India, the automobile, cement, steel, and aluminium industries are classic examples – each has only a few major manufacturers, yet they collectively supply the entire national market. The telecom sector narrows this even further: Reliance Jio, Bharti Airtel, and Vodafone Idea together control nearly the entire mobile services market in India.

High barriers to entry 🔗

New firms find it extremely difficult to enter oligopolistic markets. The barriers are substantial – high capital requirements, government licenses, control over raw materials, established distribution networks, and the sheer scale advantages existing players enjoy. In India’s telecom market, for instance, the infrastructure costs, spectrum licensing, and network coverage requirements make new entry practically unfeasible for most potential competitors. This is precisely why the market remains locked with the same few players year after year.

Interdependence among firms 🔗

This is perhaps the most defining feature of oligopoly. Because the market has so few players, any pricing or production decision by one firm immediately affects the others. When Jio launched in 2016 with drastically lower prices and free services, it triggered a price war that forced Airtel and Vodafone to drastically cut their own tariffs to remain competitive. This ripple effect – where one firm’s move compels others to react – is textbook oligopolistic interdependence.

Price rigidity and the kinked demand curve 🔗

Because of interdependence, firms in an oligopoly are often reluctant to change prices. If one firm raises its price, others may not follow, and that firm loses customers. If it lowers its price, rivals quickly match the reduction, eliminating any competitive advantage. This creates a situation of price rigidity – prices tend to remain stable even when costs change. Economists model this with the kinked demand curve, which illustrates that the demand curve for an oligopolist has a kink at the prevailing price level, making price cuts and hikes equally unattractive.

Non-price competition 🔗

Since price wars benefit no one in the long run, oligopolistic firms compete heavily on non-price factors – product features, brand identity, advertising, customer service, and innovation. Advertising becomes a matter of survival in oligopolistic markets, which is why you see relentless marketing battles between automobile brands, telecom companies, and airlines in India.

Types of oligopoly 🔗

Oligopolies are broadly classified into two types based on the nature of their products. In a pure or perfect oligopoly, firms sell homogeneous (identical) products – cement, steel, and aluminium are good examples, where one firm’s product is indistinguishable from another’s. In a differentiated or imperfect oligopoly, firms sell products that are similar but not identical – automobiles, smartphones, and airlines fall here, where branding and features create perceived differences in the consumer’s mind. Both types exist widely in India’s industrial landscape.

How prices are set in oligopolies 🔗

Price-setting in oligopolistic markets is more complex than in other market structures, precisely because of strategic interdependence. Three key mechanisms operate here:

Price leadership is the most common outcome. One dominant firm – often the largest or most cost-efficient – sets its price, and the others follow. This may happen with the dominant firm leading based on its own cost structure, or with a firm acting as a barometer for market conditions. The result for consumers is that prices across competing firms look remarkably similar, even without any formal agreement between them.

Cartels represent the more extreme end – firms explicitly collude to fix prices, limit output, or divide market territories. This is illegal in India under the Competition Act, 2002, but it has occurred in several sectors. A cartel essentially turns an oligopoly into a joint monopoly, with consumers bearing the cost through inflated prices and restricted supply.

Game theory also plays a central role in understanding oligopoly pricing. Firms behave like players in a strategic game – each decision is made with careful consideration of how rivals will respond. The classic Prisoner’s Dilemma model explains why firms in oligopolies often end up colluding even when competition would be better for the market: individual self-interest leads to collectively harmful outcomes for consumers.

Oligopoly in India: real-world examples 🔗

Over the past decade, India has witnessed the rise of oligopolistic structures across aviation, telecommunications, banking, retail, media, and automotive sectors. Some of the most prominent examples include:

Telecom: Jio, Airtel, and Vodafone Idea dominate. Their pricing strategies are closely mirrored, and a move by any one immediately reshapes the competitive landscape for the others.

Automobiles: Maruti Suzuki, Hyundai, and Tata Motors collectively hold over 70% of India’s passenger vehicle market. Their decisions on pricing, safety features, and fuel technology directly determine what options consumers have access to.

Aviation: IndiGo, Air India, and a few others control domestic air travel. Ticket pricing, especially on high-demand routes, often moves in near-parallel across carriers.

Cement: A classic pure oligopoly where a small group of manufacturers – UltraTech, ACC, Ambuja – dominate national supply. The cement industry has also been at the centre of India’s most significant cartel enforcement action.

Collusion, cartels, and the consumer cost 🔗

The biggest risk in an oligopoly for consumers is collusion – where firms coordinate (formally or informally) to keep prices high and output low. In India’s cement sector, firms used their trade association – the Cement Manufacturers’ Association (CMA) – as a platform to share price and production data, enabling coordinated pricing. The Competition Commission of India (CCI) found these 11 cement companies in violation of the Competition Act and imposed a ₹6,307 crore penalty – the largest cumulative antitrust fine in Indian history at the time – on companies including UltraTech, ACC, and Ambuja.

Airlines were not spared either. In November 2015, the CCI imposed a ₹258 crore penalty on three airlines – Jet Airways, IndiGo, and SpiceJet – for colluding to fix fuel surcharges on air cargo. These cases reveal a clear pattern: in concentrated markets, the temptation to collude rather than compete is real, and the consumer ends up paying the price – quite literally.

The regulatory framework: keeping oligopolies in check 🔗

India’s primary tool against anti-competitive behaviour in oligopolistic markets is the Competition Act, 2002. Section 3 of the Act prohibits agreements that cause an appreciable adverse effect on competition (AAEC), covering cartels, price-fixing, bid rigging, and market allocation. Section 4 prevents abuse of dominant position. Mergers and acquisitions above specified thresholds require CCI approval to prevent further concentration of market power.

Sector-specific regulators also play a role. The Telecom Regulatory Authority of India (TRAI) monitors pricing and service quality in telecom, while the Directorate General of Civil Aviation (DGCA) oversees aviation. These bodies work alongside the CCI to maintain competitive conditions in industries that are structurally prone to oligopolistic behaviour.

What oligopoly means for consumers 🔗

The consumer experience in an oligopolistic market is genuinely mixed. On the positive side, large firms enjoy economies of scale that can translate into lower production costs, sometimes passed on as reasonable prices. Heavy R&D spending driven by non-price competition can lead to product improvements – better smartphones, more fuel-efficient cars, faster data speeds. And price stability, while sometimes a symptom of collusion, can also allow consumers to budget predictably.

The downsides, however, are significant. As larger players entrench themselves, entry barriers shut out smaller and more efficient competitors, reducing innovation and consumer choice over time. Healthcare and education – sectors increasingly marked by oligopolistic concentration in India – have seen rising costs that disproportionately burden middle- and low-income households. When firms collude, consumers face higher prices, restricted supply, and fewer alternatives.

For Indian consumers navigating oligopolistic markets, awareness is a practical tool. Comparing prices across providers, understanding that similar prices across competitors may not reflect genuine competition, and using regulatory channels (including filing complaints with the CCI) are all ways to exercise informed consumer power.

What do you think? When you notice that two or three telecom providers are offering nearly identical data plans at the same price, does that seem like competition or coordination – and how would you even tell the difference? And given that oligopolies are deeply embedded in essential sectors like telecom, aviation, and cement, should Indian regulators be doing more to actively lower entry barriers for new competitors, rather than simply penalising existing players after the fact?

References

1. https://www.geeksforgeeks.org/microeconomics/oligopoly-market-types-and-features/
2. https://www.yourarticlelibrary.com/oligopoly-market/the-oligopoly-market-example-types-and-features-micro-economics/9140
3. https://ecoholics.in/oligopoly/
4. https://www.cci.gov.in/
5. https://thesecretariat.in/article/the-evolution-of-india-s-market-structure-oligopoly-on-the-horizon
6. https://www.mondaq.com/india/cartels-monopolies/530452/cement-cartel-cases-lessons-for-indias-competition-law-regime
7. https://nliulawreview.nliu.ac.in/blog/breaking-the-cement-ceiling-the-ccis-fight-against-cartelization-in-indias-cement-sector/
8. https://en.wikipedia.org/wiki/Competition_Commission_of_India
9. https://veracausalegal.com/blogs/antitrust-laws-in-india/