The figure of the entrepreneur occupies a central place in economic theory, but its definition varies from one school of thought to another. For neoclassical economists, the entrepreneur is simply a rational allocator of resources. Joseph Schumpeter presents him as an exogenous innovator who upsets market equilibrium: the new does not emerge from the old, but appears alongside it, competing with it to the point of ruin. The Austrian school, however, develops a radically different conception.

For Austrian economists, the entrepreneurial function coincides with human action itself. Jesus Huerta de Soto asserts that anyone who acts to change the present and achieve his or her goals in the future is an entrepreneur. The Austrian entrepreneur is an economic agent endogenous to the market, who comes to serve other agents better than his predecessors. He has a better knowledge of information, which enables him to seize opportunities and respond to needs through innovation. Far from disrupting a supposedly non-existent equilibrium, the entrepreneur offers individuals new knowledge that helps them orient their choices via the price system.

Israel Kirzner, an economist in the Misesian tradition, conceptualized the entrepreneur as one who helps to reduce the ignorance of other economic actors about the possibilities offered by the market. In Competition and Entrepreneurship (1973), Kirzner draws a fundamental distinction with the Schumpeterian vision. Whereas the Schumpeterian entrepreneur disturbs an existing equilibrium situation, the Kirznerian approach emphasizes the entrepreneur's contribution to the equilibrium. The changes he brings about tend towards equilibrium, rather than away from it.

The Kirznerian entrepreneur is a balancing driving force. He is the one who foresees, acts on and anticipates changes thanks to a better knowledge of the market. This vision explains the dynamics of the competitive process as a mechanism of permanent discovery and correction of misallocations. Huerta de Soto illustrates this crucial role of knowledge: if oil reserves seem limited, the discovery of a carburetor doubling engine efficiency would have the same economic effect as the duplication of total physical reserves.

The example of Robinson Crusoe illustrates several key notions of the entrepreneurial process. Alone on his island, Robinson must survive. He focuses on his most basic need, food, and has several options: hunting, gathering or fishing. He chooses the option that makes the most sense to him - harvesting coconuts, for example - and simultaneously foregoes the other possibilities, thus illustrating opportunity cost.

As time went by, Robinson decided that his method was not very efficient and decided to build a pole to improve his productivity. This effort encroaches on the time he would otherwise devote to feeding himself. He must therefore save nuts to free up the necessary time, making a present sacrifice for a better future. Once finished, the pole is a production good that will be used to increase his harvest without itself being consumed. The time freed up can be devoted to making new tools that will enrich his capitalist structure.

Competition plays a fundamental role in the Austrian vision as the epistemic mechanism by which economic actors discover the best opportunity cost of each resource. This process enables society to maximize the use of scarce factors of production and limit waste. The role of the entrepreneur is to complete the dispersed information, resulting in better market coordination.

The Austrian entrepreneur is neither a simple allocator of resources nor a destroyer of equilibrium. He is a discoverer of opportunities, a coordinator of dispersed information and a balancing force in a dynamic market process. This vision is essential to understanding theoretical developments concerning prices, capital and business cycles. It highlights the inherent uncertainty of the future, time preference, the need to save before investing, and the fundamental distinction between capital goods and consumer goods.