While support to agriculture is relatively well understood, attention is only now turning to support benefitting industrial sectors. Much less is known about the nature and scale of this support. The limited evidence available suggests it is common and sizeable in manufacturing, and that it is highly distorting to international markets. This support also takes a variety of forms, from relatively well understood input subsidies to less transparent and harder to measure support conferred through the financial system - as shown, for example, in recent OECD work on the aluminium value chain (Figure 2.2; OECD, 2019b).
The aluminium study and new work on semiconductors (OECD, forthcoming) both highlight the important role of support provided by central and local governments through their state enterprises. This support is complex and includes below-market loans from state banks; equity that state investment funds inject in companies on below-market terms (and which in turn creates channels for other forms of support, such as implicit state guarantees, and financial assistance with acquisitions or capacity addition); and a range of inputs (e.g. electricity) sold to manufacturers at below-market prices by state utilities and suppliers. These forms of support, and more generally a porous relationship between firms and the state, can make it difficult to identify individual support measures.
The effects of support in industrial sectors propagate through entire value chains that span multiple industries and countries. Measures that lower the cost of capital, and encourage the construction of more plants than market conditions would warrant, distort global markets and may also end up benefitting suppliers of equipment to those plants. Likewise, subsidised inputs for aluminium smelters can translate into cheaper products downstream that are then used to produce cars, aircraft and high-voltage transmission lines. Government support in a world of global value chains needs to take account of the way that support can accumulate along the supply chain. Support thus matters not just for particular industries, but also for the entire global trading system, which points to the need for policy solutions that address the issue in a holistic fashion.