2.3 Clustering: Porter’s National Diamond

The theory of comparative economic advantageTheory that holds that as a result of natural endowments, some countries or regions of the world are more efficient than others in producing particular goods. holds that as a result of natural endowments, some countries or regions of the world are more efficient than others in producing particular goods. Australia, for example, is naturally suited to the mining industry; the United States, with its vast temperate landmass, has a natural advantage in agriculture; and more-wooded parts of the world may have a natural advantage in producing timber-based products. This theory is persuasive for industries such as agriculture, mining, and timber. But what about industries such as electronics, entertainment, or fashion design? To explain the clustering of these industries in particular countries or regions, a more comprehensive theory of the geography of competition is needed.

In the absence of natural comparative advantages, industrial clusteringOccurs as a result of a relative competitive advantage that is created by the industry itself. occurs as a result of a relative advantage that is created by the industry itself.Krugman (1993). Producers tend to locate manufacturing facilities close to their primary customers. If transportation costs are not too high, and there are strong economies of scale in manufacturing, a large geographic area can be served from this single location. This, in turn, attracts suppliers to the industry. A labor market is likely to develop that begins to act like a magnate for “like” industries requiring similar skills. This colocation of “like” industries can lead to technological interdependencies, which further encourage clustering. Clustering, therefore, is the natural outcome of economic forces. A good example is provided by the semiconductor industry. Together, American and Asian firms supply most of the world’s needs. The industry is capital intensive, research and development costs are high, the manufacturing process is highly complex, but transportation costs are minimal. Technology interdependencies encourage colocation with suppliers, whereas cost and learning curve effects point to scale efficiencies. Clustering, therefore, is mutually advantageous.

Only when transportation costs are prohibitive or scale economies are difficult to realize—that is, when there are disincentives to clustering—do more decentralized patterns of industry location define the natural order. The appliance industry illustrates this. Companies such as GE and Whirlpool have globalized their operations in many respects, but the fundamental economics of the industry make clustering unattractive. The production of certain value-added components, such as compressors or electronic parts, can be concentrated to some extent, but the bulky nature of the product and high transportation costs make further concentration economically unattractive. What is more, advances in flexible manufacturing techniques are reducing the minimum scale needed for efficient production. This allows producers to more finely tailor their product offerings to local tastes and preferences, further thwarting the globalization of the industry.

Thus, classical economic theory tells us why clustering occurs. However, it does not fully explain why particular regions attract certain global industries. Porter addressed this issue using a framework he calls a “national diamondSeeks to fully explain "clustering," why particular regions attract certain global industries..”Porter (1990). It has six components: factor conditions, home-country demand, related and supporting industries, competitiveness of the home industry, public policy, and chance.