Industrial policy refers to government efforts to influence the economy's structure to achieve certain strategic outcomes. It doesn't necessarily relate only to "heavy industry" or industrialization. The definition of industrial policy that is preferred in the provided context is "the government trying to change the composition of the economy in the service" [00:05:16.000]. It can include a variety of measures such as direct subsidies, trade policies like tariffs, and other forms of government intervention aimed at specific economic sectors to make them more competitive or to correct market failures [00:06:13.000].

The concept of market failure is central to the rationale for industrial policy, as governments may intervene when the market alone does not allocate resources efficiently or equitably [00:07:32.000]. Positive externalities, where the full benefit of an economic activity is not captured by the one undertaking it, are classic examples of market failures that industrial policy might aim to address [00:07:48.000].

Industrial policy is controversial and has been traditionally viewed by mainstream economics as potentially inefficient or even harmful, with the suggestion that governments should not interfere with market outcomes [00:01:32.000]. However, there has been a resurgence of interest in industrial policy in recent years, particularly in the United States, as evidenced by policies such as the CHIPS Act and the Inflation Reduction Act, which focus on funding sectors like microchip manufacturing and clean energy [00:20:30.000], [00:21:00.000].