Quote · Excess Returns
The $2 Trillion Question | Tobias Carlisle on SpaceX, the AI Buildout, and the Rotation No One Sees
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AI capex and lessons from past technology booms
At 17:47 · chapter starts 14:15
Comparing AI to fiber optic and railway buildouts, Carlisle notes AI hardware lasts only 5-7 years vs. 25+ years for prior infrastructure. Gartner hype cycle dynamics are in play. [1] — Tobias Carlisle "AI hardware useful only 5–7 years: Unlike fiber optic cable or railways which last 25+ years, AI computing hardware depreciates and becomes…" 16:12
The entire AI infrastructure buildout may end up enriching users rather than investors. Competition among AI providers makes commoditization inevitable — most people will use cheaper, older models rather than pay for the cutting edge. The value creation is real, but investors may not capture it.
Fiber optic cables and railways last 25+ years. AI data center hardware becomes obsolete in 5 to 7 years. This changes the economics of the buildout entirely — the returns need to come faster, and the depreciation risk is far higher than in prior technology booms.
Unlike fiber optic cable or railways which last 25+ years, AI computing hardware depreciates and becomes obsolete in roughly 5 to 7 years.
