Market Structures: Perfect Competition and Monopoly

This advanced topic analyses the extremes of market organisation: perfect competition and pure monopoly. Students will examine the defining characteristics of a perfectly competitive market, including many small firms, homogeneous products, and free entry/exit, and derive the firm's short-run and long-run supply decisions. The model demonstrates how such markets achieve productive and allocative efficiency in the long run. In contrast, the monopoly model explores the behaviour of a single seller protected by barriers to entry, highlighting how profit-maximisation leads to higher prices, lower output, and deadweight loss compared to perfect competition. Concepts such as natural monopoly and price discrimination are also introduced. For Zambian university students pursuing degrees in economics, business, or related fields, this topic is critical for understanding the spectrum of market power, evaluating the performance of different industries (from agriculture to utilities), and forming the basis for analysing government regulation and competition policy in the Zambian and global context.