Intra-Industry Competition, one type of capitalist competition; the struggle between private commodity producers who manufacture the same type of commodity, to obtain more profitable conditions for their production and sale; the struggle between the capitalists of one industry to derive the greatest possible profit on the capital they have invested. Intra-industry competition results in the formation of a single market price for the given commodity, which is based on the social (market) value of these commodities. Enterprises where labour productivity is high and there 178 is a correspondingly low individual value of commodities obtain extra profit if they sell their products at the market price or even at a price slightly below it; the source of this extra profit is excess surplus value. On the other hand, enterprises with low labour productivity and a correspondingly high individual output value, when selling their product at the market price, lose part of the surplus value created and obtain a lower rate of profit; sometimes they cannot even cover production costs. Intra-industry competition results in the ruin of simple commodity producers and small capitalists, the concentration of production and capital, and the aggravation of the class contradictions inherent in bourgeois society; enterprises with a high level of concentration of capital rise to the top. On the one hand, this type of competition serves to enhance technical progress and raise labour productivity at capitalist enterprises, and on the other, it is a brake on the development of the productive forces, inasmuch as it engenders commercial secrets, interferes with the prompt application of discoveries in science and technology in industry, leads to the plunder of the productive forces and is accompanied by really destructive consequences, especially under the domination of big monopoly capital when intra-industry competition becomes particularly fierce.