“AI may eventually make intelligence cheaper. But first, building intelligence is making capital more expensive.”
The AI Supercycle is producing a monetary paradox. Industrial AI may ultimately be deflationary. But building the Industrial AI economy is proving inflationary first.
The latest signal comes from Japan. The Bank of Japan has raised rates to 1.25%, entering its estimated neutral-rate range just as AI investment, energy scarcity and fiscal spending are increasing global demand for capital.
Japan now joins the Fed, ECB and Bank of England in confronting the same fundamental question: has the AI Supercycle raised the neutral rate during the build-out phase?
The Emerging Chain
how capital formation lifts R*
The Policy Response
how central banks are reading it
-
The ECB is introducing an important qualification. Christine Lagarde is resisting a mechanical response to energy inflation: a supply shock should not automatically trigger tighter policy if higher prices simultaneously weaken consumption and growth.
That distinction will matter enormously for AI. A temporary shortage of GPUs, electricity or data-centre capacity is different from AI investment triggering persistent wage, credit and demand inflation. signal: Distinguish a temporary supply shock from persistent demand-driven inflation.
The Great Split Moves Into the Cost of Capital
winners vs. vulnerable assets
AI Cash-Flow Generators
The winners will convert compute and infrastructure into cash flow quickly enough to outrun a higher WACC.
AI Capital Consumers
The vulnerable assets will depend on repeated refinancing, expensive power and long-duration assumptions.
The European Risk
a widening competitiveness gap
what to watch
- The BoJ's move to 1.25% places a fourth major central bank inside the neutral-rate debate.
- Central banks remain in the first half of the cycle — capital formation, not productivity diffusion.
- Investors face a widening split between AI cash-flow generators and AI capital consumers.
- Europe risks a competitiveness gap unless it connects savings to productivity through AI infrastructure.