The Spending Spree Comes With a Receipt
Microsoft, Alphabet, Amazon, Meta and Oracle are building AI infrastructure at a pace that would make a pharaoh blush. Consensus 2026 capex for the five rose from about $485 billion in January to about $730 billion in July, according to LSEG data (Reuters, 2026).
A Reuters analysis projects capex rising about $534 billion by 2027, against about $340 billion more operating cash flow than in 2025. That is roughly $1.57 of added investment per $1 of added cash flow. By 2027 the five are expected to spend more on capex than they generate in free cash flow (Reuters, 2026).
Meet the Company With the Biggest Tab
Oracle is the cautionary tale. In its latest fiscal year it spent $55.7 billion on capex against $32 billion of operating cash flow, and its capex as a share of operating cash flow rose from 47% in fiscal 2022 to 174% in fiscal 2026 (Reuters, 2026).
| Operating cash flow | $32B |
| Capex | $55.7B |
Oracle's free cash flow has turned negative, it plans to raise $45 billion to $50 billion through debt and equity, and its shares are down 36% this year. Amazon grew trailing twelve month operating cash flow 30% to $148.5 billion, yet its free cash flow fell to $1.2 billion (Reuters, 2026).
Genius Move or a Very Expensive Sequel?
The optimists have receipts too. Microsoft says its AI business has passed a $37 billion annual revenue run rate, and Amazon's AWS grew 28% in its first quarter. Microsoft, Alphabet and Meta still generated enough free cash flow to cover dividends and buybacks (Reuters, 2026).
Analysts are split on the mood. Shay Boloor of Futurum Equities said investors are underestimating how fundamentally AI is changing the Big Tech business model, while David Russell of TradeStation said companies exist to make money, not spend money. Freddy Lavric of Winthrop Capital Management said that within two to three years, firms must show AI is driving added revenue, margin expansion and better cash flow, or markets may question the investment cycle (Reuters, 2026).
The market is happy to wait, but it is not happy to wait forever.
The market is happy to wait, but it is not happy to wait forever.
What You Can Actually Do About It
Your index fund probably owns these companies, so check how much of your portfolio leans on a handful of AI names. Spread your money across regions and sectors, avoid making big moves on a single headline, and keep a long horizon if you are investing for the long term. Then ask yourself, if the AI giants' shares fell sharply next month, how worried would your portfolio make you?
References
Reuters. (2026, July 22). AI investment boom puts Big Tech's free cash flow under pressure. Khaleej Times. https://www.khaleejtimes.com/business/tech/ai-investment-boom-puts-big-techs-free-cash-flow-under-pressure?amp=1
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