The US economy's heavy bet on artificial intelligence mirrors historical speculative manias, but past digital innovations failed to boost productivity quickly, suggesting AI's payoff will take decades.
01Summary
- 01AI-related capital spending has surged to about 2% of US GDP from near zero five years ago.
- 02Investments in AI proxies accounted for 39% of US economic growth in the first three quarters of 2025, exceeding the dot-com peak of 28%.
- 03The Magnificent Seven stocks hold $25 trillion in market capitalisation, 35% of the S&P 500 and the highest concentration since before the 1929 crash.
- 04AI captured 81% of a record $300 billion in global venture funding in the first quarter of 2026.
- 05The Bank for International Settlements warned that AI exuberance risks a 'lengthy investment bust' due to circular financing.
02Why it matters
This matters because the US economy's growth is now dangerously dependent on a narrow set of AI-driven investments; if the bubble bursts, it could trigger a severe recession affecting jobs, savings and public finances.
Pulse AIAsk about this story
Answers are generated by AI from the story summary; they are not investment, health or legal advice.
