AI evangelists often equate AI to the steam engine—arguably as the first technological development that sustainably raised per-capita growth since humans developed farming. Very roughly, the Industrial Revolution and subsequent inventions raised per capita trend growth by 0.8% per year. That would be a notable boost, and we are wary of higher forecasts.
AI Is Not Happening in a Vacuum: Growth Constraints Matter, Too
But any AI productivity boost won’t be the only force coming to bear on growth—it must work against other mega forces that imply downward growth pressure. Some, like demographics, are more predictable; others, like climate change, aren’t. Changes in the labor and capital shares of profit from GDP also play a role.
For the demographic force of a declining working-age population, we assume that the positive case is US immigration rates similar to recent years, with the population growing slightly. A zero-immigration policy would reduce growth slightly. However, the US would still be better off than the rest of the developed world and China, where demographics are a net drain on growth. As for climate change, we think it’s highly unlikely that the world achieves net zero by 2050: the growth implications are widely debated but agreed to be negative.
The combined upward and downward forces on growth will influence real corporate earnings, as will shifts in the profit share of GDP, which has shifted more in favor of corporations in the US. If decisions about what AI is developed and released is left to corporations, this share could rise even more. Elsewhere in the world, profit share has been more stable, so we assume it will remain constant.
We can try “reverse engineering” the question of AI productivity: How much of a boost would fully offset the downward growth forces? If we expect those forces to reduce real earnings and GDP growth in the developed world by 1.1% annualized over the next decade, the required base-case assumption for AI would be at the highest-end historical range of sustained productivity increases. We think that’s imprudent to have as a base-case forecast.
Do Sizable Productivity Gains from AI Mean Mass Job Losses?
The dominant fear with AI is that automation will destroy jobs semipermanently. In the near term, AI-driven productivity gains will come from either substituting for labor and saving the cost of those roles while keeping output constant, or from making a given role more productive. AI could also create new roles, but that would come later.
More than 70% of computer and mathematics tasks, and of office and administrative tasks, are exposed to LLM automation, while the exposures of construction, building and maintenance, and protective services are only around 20%. On this basis, the financial services industry is most exposed to AI, construction and agriculture the least (Display). The degree of AI-based transformation has a range of scenarios, depending on AI adoption rates and job displacement.