Glossary

Zero-Sum Game

Definition

A zero-sum game is a concept from game theory where one participant’s gain is exactly balanced by another participant’s loss. In such scenarios, the total benefit or loss remains constant, and the success of one party directly comes at the expense of another. Zero-sum games are often used to describe competitive situations in economics, business, or politics.

Key Characteristics

  • Fixed Value: There’s a set amount of value or resources being redistributed — no new value is created.
  • Direct Trade-Off: One participant’s win is another’s loss, with no mutual benefit.
  • Total Net Change = 0: Gains and losses cancel each other out across all players.

Examples

  • Poker or Gambling: One player’s winnings are funded by others’ losses.
  • Negotiating Over a Set Budget: If one department gets more funding, another gets less.
  • Market Share Battles: In a saturated market, one company’s growth in share may come directly at the expense of competitors.

Zero-Sum vs. Non-Zero-Sum

  • Zero-Sum: Total value stays constant; only the distribution changes.
  • Non-Zero-Sum (Positive-Sum): All parties can potentially benefit, such as through collaboration, innovation, or expanding markets.

Why It Matters
Understanding whether a situation is zero-sum or not helps shape business strategy.

  • In zero-sum situations, the focus is on outcompeting others.
  • In non-zero-sum contexts (like partnerships or market expansion), collaboration can create value for everyone involved.

How does a zero-sum game differ from a win-win situation?

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In a zero-sum game, one party’s gain equals another party’s loss, leaving no net benefit for both sides. Conversely, a win-win situation allows all parties to benefit simultaneously, creating additional value rather than redistributing it. Startups typically aim for win-win scenarios in partnerships and collaborations to maximize mutual growth.

Why is understanding zero-sum games important for startups?

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Startups often operate in competitive environments where resources like funding, market share, or talent are limited. Recognizing zero-sum dynamics can help startups craft strategies to outcompete rivals or find opportunities to create value beyond a zero-sum framework, such as through innovation or collaboration.

Are all competitive situations zero-sum games?

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No, not all competitive situations are zero-sum. Many markets and industries allow for value creation, where multiple players can benefit simultaneously. For example, technological innovation or market expansion often leads to scenarios where competitors can grow without directly harming each other.

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