Sep 29, 2026 11:39 am IST

Opinion | The AI Boom Has Run Into A Big 'Debt' Trap Problem. Inside The 5% Danger Line

For most of the AI buildout's first two years, hyperscalers funded it the easy way: out of operating cash flow. That era is over.

Deepanshu Mohan, Srisoniya Subramoniam Deepanshu Mohan Columnist Srisoniya Subramoniam Columnist

Deepanshu Mohan Columnist

Srisoniya Subramoniam Columnist

Big Tech's four largest hyperscalers - Microsoft, Alphabet, Amazon, and Meta - are set to spend somewhere between USD 720 billion and USD 760 billion on capital expenditure in 2026, up roughly 77% from about USD 410 billion in 2025.

This is, by any measure, the largest single-sector capital deployment in the history of American business - and it was originally supposed to be a story about corporate cash flow, not sovereign credit. That is no longer true. As of September 24, 2026, the 10-year Treasury yield is holding around 5.12%, near its highest level since July 2007. Two weeks earlier, on September 14-15, the 10-year yield briefly surpassed 5% for the first time since 2023 - a level analysts had flagged for months as the threshold at which the AI trade and the fiscal trade would collide.

It has not meaningfully receded since.

It is important to note that if long-term interest rates decisively breach the 5% threshold, the impact could derail the AI boom. Global investors have been giving Washington a "free pass" on those numbers till now because of an implicit bet that AI-driven productivity growth will eventually outrun the debt.

The 10-year yield crossing 5% is the market beginning to test that bet.

From Free Cash Flow to Debt Markets

For most of the AI buildout's first two years, hyperscalers funded it the easy way: out of operating cash flow. That era is over. Consensus estimates show AI capex hitting 94% of operating cash flow minus dividends and buybacks in........

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