The AI Bubble as a Mechanism for Speculative Growth

Ricardo Caballero from MIT presents a theory suggesting that high valuations of AI companies facilitate capital accumulation necessary to transition the economy to a new level of productivity.

Compiled by Sergey KostenchukPublished 2026-07-15Updated 2026-07-15

2026-07-15 Business

💼 The AI Bubble as a Mechanism for Speculative Growth

Ricardo Caballero (MIT/NBER) has presented a theory of "speculative growth" that explains the current situation in the AI industry. According to the research, inflated company valuations can serve as a tool for accumulating the colossal capital required to build next-generation infrastructure.

🌍 This concept changes the perspective on investment risks in AI: a temporary overvaluation of assets may act as a mechanism to transition the economy into a high-productivity state, which could lower interest rates in the long run.

👤 This explains why market valuations for AI appear detached from reality: they may be facilitating a real technological leap rather than simply leading to a financial crash.

Source 1: https://economics.mit.edu/sites/default/files/2026-07/speculative_growth_AI_public.pdf

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