Artificial intelligence can lift productivity and sustain business investment. The scale and durability of the gains will depend on labour, energy, materials, finance and the policy response.
Introduction and summary messages
The surge in artificial-intelligence investment is being driven by the technology's potential to raise productivity and corporate profitability. It is unfolding, however, in a world economy increasingly constrained by scarce labour, power, materials and capital. Those constraints make labour-saving technology more valuable, but they also limit how quickly the infrastructure supporting it can expand.
The initial macroeconomic effects can be favourable. If productivity rises faster than wages, unit labour costs fall. Firms can expand output without increasing employment at the same rate, supporting margins while containing underlying inflation. Stronger supply can therefore coexist with resilient demand and give monetary policy more room to accommodate growth.
The central risk comes later. Capacity and scarcity determine whether that favourable chain continues or reverses. Productivity gains can be diluted if electricity, grids, equipment, industrial materials or skilled labour become binding constraints. Inflation may then rise even before demand has weakened, leaving central banks to balance price stability against the investment needed to expand supply.
Backdrop
Companies are buying computing power, software and equipment because they expect to produce more with fewer workers. Scarcity adds urgency to that calculation. Labour is expensive, trade is more fragmented and capital is no longer free. Governments are also investing in energy security, defence and domestic supply chains. Climate disruption and tighter immigration policies in some economies are adding to the pressure on energy systems, transport, construction and skilled labour.
Energy is where the tension is sharpest. Digital capital can be installed quickly; power stations, transmission lines and mines cannot. The most important price in the AI boom may therefore be the price of electricity rather than the price of a semiconductor.
The investment response is already visible. Orders for capital goods across the United States, Germany and Japan have risen for seventeen consecutive months, while Asian semiconductor exports tell the same story from the production side. Inflation-adjusted orders remain below their 2021 average, suggesting that the cycle is still relatively young.
The increase in investment is only the starting point. Its economic significance will depend on whether it produces measurable gains in output and productivity, how those gains are divided between labour and capital, and whether the expansion runs into physical or financial constraints. The framework below traces that transmission before the subsequent section considers what the available evidence suggests about how far it has progressed.
Global
