61 The Secret Conversations of Companies

Imagine a small British town with a quiet high street. A post office. A bakery. A Greggs. And two cafés facing each other across the road. From the outside, they look ordinary. Inside, something more subtle is happening.

Every morning, before the doors open, both café owners are already thinking about each other. Should they raise prices? Keep them the same? Introduce a loyalty card? Extend opening hours? None of these decisions is made in isolation. Each one depends on what the other is expected to do.

This is the essence of strategic interaction.

In some markets, firms behave like strangers passing in the night. In others, they behave like chess players locked in an ongoing game. Oligopoly belongs to the second category. When only a few firms dominate a market, every move matters.

Game theory gives us a way of understanding these situations. It does not assume that firms are aggressive or malicious. It assumes something simpler. That each firm is trying to do the best it can, given what it believes others will do.

Return to the two cafés. Both have a choice. Keep prices high or cut prices. If one cuts while the other does not, it may attract more customers. But if both cut prices, profits collapse. Each café faces the same dilemma. The individually tempting move leads to a collectively worse outcome.

This is the classic prisoner’s dilemma. No one wants to destroy profits. Yet rational behaviour can still lead there.

The picture changes when interaction is repeated. These cafés do not meet once. They meet every day. Over time, patterns form. Owners learn that aggressive price cuts trigger retaliation. Stability begins to look attractive. Without ever speaking, the cafés settle into an unspoken understanding. Prices stabilise. Each focuses on its niche. One emphasises atmosphere. The other emphasises speed.

This is tacit coordination. It is not a secret meeting or a signed agreement. It is learning through experience.

Such behaviour appears across the economy. Supermarkets watch each other’s promotions closely. Airlines match fares within hours. Petrol stations across the street often display almost identical prices. Each firm knows that deviation will provoke response.

These “conversations” happen through actions, not words.

From the firm’s perspective, this is survival. From society’s perspective, it raises questions. When coordination reduces destructive competition, it can bring stability. When it limits choice or keeps prices high, it can harm consumers.

This is why institutions matter.

Competition authorities exist precisely because strategic interaction can drift from healthy rivalry into quiet collusion. The line is not always clear. Firms may never speak. They may never intend to break the law. Yet outcomes can still resemble coordination.

Democratic oversight is not about punishing success. It is about preventing power from becoming invisible.

Game theory also explains why new entrants can be disruptive. When a new café opens and behaves unpredictably, perhaps offering extreme discounts or free coffee, the existing balance collapses. The old players cannot predict responses. The game resets.

This is what happened when discount airlines entered aviation markets, or when low-cost supermarkets challenged established chains. These firms did not just offer cheaper prices. They changed expectations.

Strategic uncertainty returned.

Game theory also highlights the role of commitment. When a firm invests heavily in capacity, technology, or branding, it sends a signal. “We are serious. We will not back down easily.” These commitments shape rivals’ decisions. Sometimes firms invest not to increase efficiency, but to influence behaviour.

Power enters quietly here. Firms with deep pockets can afford strategies that others cannot. They can endure losses longer. They can threaten retaliation credibly. Smaller firms often exit, not because they are inefficient, but because they cannot survive the game.

This is where markets intersect with democracy again. Without rules, strategic games favour the strongest. With rules, they can reward innovation rather than endurance.

Game theory does not tell us what firms should do. It helps us understand why they do what they do. It shows how rational behaviour can produce outcomes that no one explicitly chose. It explains why cooperation sometimes emerges, and why conflict sometimes persists.

Most importantly, it reminds us that markets are social systems. They rely on expectations, trust, and shared rules. When those rules are transparent and enforced, competition can be dynamic without becoming destructive. When they are weak, power concentrates.

The secret conversations of companies are always happening. The question is not whether firms interact strategically. The question is whether societies choose to listen, regulate, and guide those interactions toward outcomes that benefit many rather than a few.

That choice is collective.

Further Reading and Exploration

Game theory and strategic interaction

• Dixit, A. and Nalebuff, B., Thinking Strategically
• Schelling, T., The Strategy of Conflict

Oligopoly and market power

• Stiglitz, J. E., People, Power, and Profits
• Khan, L. M., “Amazon’s Antitrust Paradox”

Institutions and competition

• North, D. C., Institutions, Institutional Change and Economic Performance
• Varoufakis, Y., Talking to My Daughter About the Economy