Firms, Costs, Competition, and Market Structure
Firms, costs, competition, and market structure are central to economic analysis because they reveal how production is organized, how prices are formed, how power is distributed, and how sectors evolve across time. Firms are not merely technical units of production, but strategic institutions embedded in labor systems, supply chains, financial structures, public rules, and industrial environments. This article examines how cost structures shape pricing, output, investment, and concentration; how competition varies across real markets; and how market structure conditions innovation, bargaining power, resilience, and public legitimacy. It also shows that firm-level efficiency is not always the same as system-level rationality, especially when costs are shifted onto workers, households, public systems, or ecosystems.









