Does intra-industry trade contradict the theory of comparative advantage?

Intra-industry trade refers to the exchange of similar products in the same industry between countries. It means that countries import and export goods that belong to the same industry or product category.

The theory of comparative advantage states that countries should produce and export goods for which it has the lowest opportunity cost compared to other countries, and import goods for which other countries have a comparative advantage. This allows all the trading partners to benefit from the trade.

At first glance, it may seem that intra-industry trade contradicts the theory of comparative advantage because countries are importing and exporting goods from the same industry. However, this is not the case. In fact, intra-industry trade can be compatible with the comparative advantage concept when we consider the differentiation within the same industry.

Industries often produce differentiated products, which have specific attributes or features that make them unique in some way. In this case, countries can specialize in producing and exporting specific versions of a product within the same industry, based on their comparative advantage. For example, country A might produce and export luxury cars while country B might produce and export economy cars - both countries are engaged in intra-industry trade within the automobile industry, but they each have a comparative advantage in producing a specific type of car.

Intra-industry trade can also be explained by economies of scale, which arise when the cost per unit of a product decreases as the production scale increases. Trading similar products between countries allows firms to take advantage of the scale economies, lower their production costs, and obtain a wider variety of products for consumers. In this context, intra-industry trade can coexist with comparative advantage theory, as countries may still specialize in producing specific products or product varieties within one industry. In conclusion, intra-industry trade does not contradict the theory of comparative advantage. When considering differentiated products, countries can specialize in producing specific varieties within the same industry based on their comparative advantage, and both industries can benefit from the gains of trade. Additionally, intra-industry trade can help firms take advantage of economies of scale, which ultimately benefits consumers and supports the basis of comparative advantage.