Industrial policy promotes industries; competition policy keeps the firms in them honest. This module covers competition (antitrust) policy — why markets concentrate, how market power harms an economy, and the tools to police it — with attention to the particular challenges of enforcing competition in developing-country markets and the genuine tension between promoting national champions (industrial policy) and ensuring competition.
Why markets concentrate, and the harms
Markets tend toward concentration for several reasons: economies of scale (bigger firms have lower costs — the new-trade-theory logic), network effects (a platform becomes more valuable as more use it — winner-take-most dynamics), barriers to entry (high fixed costs, regulation, incumbency advantages), and mergers (firms buying rivals). Concentrated market power harms the economy: monopolists and oligopolists charge HIGHER prices and produce LESS (the deadweight loss of the microeconomics course), they have weaker incentives to INNOVATE (no competitive pressure), they can entrench themselves and block entry, and the resulting profits can worsen INEQUALITY (a concentrated economy concentrates wealth). So while some concentration is natural and even efficient (scale economies), unchecked market power is a real cost — which competition policy exists to address.
The three pillars
What competition policy does
Competition (antitrust) policy rests on three pillars: • Anti-cartel enforcement — prohibiting collusion, especially price-fixing and bid-rigging among supposed competitors. This is the most clear-cut harm (a cartel is theft from consumers with no efficiency justification) and the priority of any competition regime. Cartels are secret, so detection (leniency programmes that reward the first cartel member to confess, dawn raids) is the challenge. • Abuse of dominance — preventing a DOMINANT firm from using its market power to exclude rivals or exploit consumers (predatory pricing to kill competitors, refusing access to an essential facility, exclusive-dealing arrangements). Harder than cartels, because dominance itself isn't illegal (a firm can win by being good) — only its ABUSE. • Merger control — reviewing and potentially blocking or conditioning mergers that would substantially lessen competition (two large rivals combining into a dominant firm). Forward-looking (preventing concentration before it happens) and the most resource-intensive. Together these aim to preserve competitive markets — and the debate over WHOSE welfare they serve (the narrow 'consumer welfare standard' that dominated for decades vs the broader concerns about market power, inequality, and democracy of the 'neo-Brandeisian' revival) is a live one. But the core — stopping cartels, abuse, and anticompetitive mergers — is well-established.
Competition in developing countries
Why it's harder in developing markets
Competition policy faces distinctive challenges in developing economies: (1) markets are often MORE concentrated (small markets support fewer firms; scale economies and a few dominant players are common — the concentrated banking, telecoms, cement, and sugar sectors of the microeconomics course), so market power is a bigger problem; (2) the dominant firms are often politically POWERFUL (connected to the state, or state-owned), so enforcement runs into the capture and political-economy obstacles of the Governance area; (3) competition authorities are often WEAK (under-resourced, new, lacking expertise and political backing); (4) the large INFORMAL sector complicates the analysis (informal competitors discipline some markets but not others); and (5) cross-border anticompetitive conduct (regional cartels) exceeds any single national authority's reach (the AfCFTA competition-protocol point). So developing-country markets often combine HIGHER concentration and market power with WEAKER enforcement — a bad combination. Strengthening competition policy (building capable, independent competition authorities, regional cooperation — the African Competition Forum, the AfCFTA competition protocol) is an important and underappreciated part of the development agenda: competitive markets lower prices, spur innovation, and check the concentrated economic power that can capture the state.
Competition versus industrial policy
There is a genuine TENSION between competition policy (which wants many competing firms and low concentration) and industrial policy (which sometimes wants to build large 'national champions' that can achieve scale and compete globally — and which may promote, protect, or subsidise particular firms, reducing competition). East Asian industrial policy often deliberately created large, concentrated firms (Korea's chaebol) — defying competition-policy logic — to achieve scale. The tension is real: scale (which industrial policy seeks) and competition (which competition policy protects) can conflict. The resolution is nuanced: (1) the DISCIPLINE of export-market COMPETITION (the developmental-state lesson) can substitute for domestic competition — a national champion forced to compete in WORLD markets faces competitive discipline even if it dominates the small domestic market; (2) competition policy should focus on the clearest harms (cartels, abuse) even where some concentration is tolerated for scale; and (3) the danger is using 'national champion' rhetoric to shelter inefficient, politically-connected monopolies with no export discipline (the ISI/capture failure). So competition and industrial policy can be reconciled — promote scale where genuinely needed but discipline it with export competition and police the clearest abuses — but the tension is real and the risk (sheltering connected monopolists under the banner of industrial policy) is exactly the capture problem the whole program warns against. The two policies must be balanced, not blindly pursued in isolation.
Exercise
In an African country, three large firms dominate the cement market, prices are far above import parity, and there are signs of coordinated pricing. The firms are politically well-connected, and one is partly state-owned. The competition authority is new and under-resourced. (1) Identify which competition concern this raises and the likely harm. (2) Explain the enforcement challenges given the firms' political connections and the weak authority. (3) Explain how this connects to the competition-vs-industrial-policy tension. (4) Recommend how to strengthen competition in this market, including the regional dimension.