AI Speculative Mania
The hypothesis that the 2020s AI investment cycle represents the largest speculative bubble in history, with hyperscalers committing over 100% of cash flow to AI infrastructure
AI Speculative Mania
The Thesis
Terry Smith argued at the 2026 Fundsmith AGM that AI represents the largest speculative craze in history, surpassing even the Dutch East India Company, Mississippi Scheme, South Sea Bubble, and dot-com bubble.
The Data
| Bubble | Estimated Value |
|---|---|
| Top 5 AI Hyperscalers + Top 5 Semiconductors | $20 trillion |
| NASDAQ at dot-com peak | $12 trillion |
| Dutch East India Company (inflation-adjusted) | $8 trillion |
| Mississippi Scheme | $6.5 trillion |
| South Sea Bubble | $4.3 trillion |
Smith: "The short answer to the first part of the question would seem to be yes. It is the biggest."
The Hyperscaler Capex Crisis
The AI mania is being driven by hyperscalers spending extraordinary amounts:
| Company | Capex as % of Free Cash Flow |
|---|---|
| Microsoft | 87% |
| Meta | 91% |
| Alphabet | 97% |
| Amazon | >100% (going into debt) |
| Oracle | 200% |
| CoreWeave | 567% |
The Math Problem
"If we're looking for a 30% return on capital, those companies are going to need to generate $180 billion of new cash flow — not from the things they've already got, not by cannibalising what they already have — to justify that in terms of return on capital, per annum."
The Winner Problem
Smith noted: "In aerospace, it wasn't anyone called Wright." Meaning the eventual winners of AI may not be the obvious current leaders.
"Will it even be a company in the West? I don't know."
The Revenue Challenge
Currently, AI is largely free for users. Smith noted Fundsmith pays for some AI tools, but:
"We're probably unusual in paying, because we're a business — most consumers are probably not paying at all."
The historical model of "get them hooked then charge" requires dominant market position — but the AI space has intense competition.
Related Companies
- nvidia — The primary semiconductor beneficiary
- microsoft — One of the hyperscalers
- meta — Reducing exposure
Related People
- terry-smith — The fund manager calling this the biggest bubble ever
Famous Quotes
"It's the largest speculative craze in history." — Terry Smith, 2026 AGM
"We haven't got a clue" how to make money from AI. — Terry Smith