Perfect Competition: 3 Examples of the Economic Theory

Perfect competition is an economic term that refers to a theoretical market structure in which all suppliers are equal and overall [supply](https://www.masterclass.com/articles/supply-curve-explained) and demand are in equilibrium. For example, if there are several firms producing a commodity and no individual firm has a competitive advantage, there is perfect competition. In this ideal market, quality is comparative across firms, and buyers can purchase the product for the lowest possible price. Perfect competition is a theoretical market structure with several characteristics. Economists studying [macroeconomics](https://www.masterclass.com/articles/learn-about-macroeconomics) and microeconomics use these ideal constructs as benchmarks to compare the operation of real markets: 1. __Homogenous products__: In perfect competition, all firms produce the same product, making it a commodity. The basic aspects of the product are consistent, including the overall quality. 2. __Price takers__: The market price is equal to the marginal cost of production, and no single firm has the power to charge more. The other firms will undercut any firm charging higher prices. Market demand is stable over the long run, so all producers have similar market share. 3. __Profitability__: While there may be short-run profits for individual firms quicker to market, the long-run equilibrium of perfectly competitive markets means that, eventually, no firm makes economic profit. New producers entering the market bring down the demand curve, and no firm is able to increase product prices to sustain profits. 4. __Free entry__: There are no barriers to entry or exit in a perfect competition. Any startup firm can be a competitive firm by producing the product at the same marginal cost as others. Moreover, leaving the market incurs no cost to producers. 5. __Rational buyers__: In this theoretical market, all buyers make rational purchases to maximize their economic utility and seek a lower price. Also, these buyers have perfect information about the products they are purchasing, meaning they know the price points across different firms. 6. __Mobile resources__: The labor and the capital involved in a perfect competition are mobile and can move wherever they need or want to, with no associated cost. 7. __Regulation__: In a perfectly competitive market, the process of making, selling, or using goods does not affect any third party. Thus, there is no need for government licensing or regulation. Real markets are usually somewhere between perfect competition and its theoretical opposite, [monopolies](https://www.masterclass.com/articles/economics-101-what-is-a-monopoly), where a single producer has complete control of a market. Real-world examples that resemble the perfect competition ideal include: 1. __Farmers’ markets__: The average [farmers’ market](https://www.masterclass.com/articles/how-to-shop-at-the-farmers-market-with-alice-waters) is perhaps the closest real-life example to perfect competition. Small producers sell nearly identical products for very similar prices. The entry and exit of some vendors does not change the overall marketplace, and the prices and product information is clear and fairly uniform. 2. __Emergent tech__: Often, as in the case of early online retailers, there are no clear market advantages, and many tech companies offer basically the same services for similar prices. An example is early social media companies—several new firms offered comparable services for virtually the same price. 3. __Discount brands__: There may be cheaper versions of the same product in supermarkets, such as cereal made by the different brands. None of these substitutes will be significantly different in quality or price, so they resemble a perfectly competitive market. Get the [MasterClass Annual Membership](https://www.masterclass.com) for exclusive access to video lessons taught by the world’s best, including Paul Krugman, Doris Kearns Goodwin, Ron Finley, Jane Goodall, and more. Perfect competition is a useful economic theory that illustrates a type of market structure operating under ideal conditions.