The comparisons are hard to avoid. Soaring valuations, massive capital expenditure on data centres and AI infrastructure, and near-universal conviction that a transformative technology is about to reshape the economy. To many observers, today looks uncomfortably like the late 1990s.
The parallel is understandable. It is also, on the most important dimension, wrong — and Haver data help explain why.
The critical variable: who holds the debt
Investment booms become dangerous when they are financed by leverage. The late 1990s are a textbook case. As internet enthusiasm intensified, US corporations borrowed heavily to fund infrastructure buildout. By 2000, the non-financial corporate sector was running a financial deficit approaching 4% of GDP — spending substantially more than it earned. When expectations proved too optimistic, investment collapsed, and corporate deleveraging deepened the downturn.




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