On February 5, 2026, Alphabet increased its 2026 capital expenditure forecast to $175-185 billion — nearly double 2025's $91.4 billion and $55 billion above the analyst estimate of $120 billion. The same day, Amazon boosted its full-year spending forecast to $200 billion. A week earlier, Meta guided $115-135 billion. Three companies. One year. $490-520 billion in AI infrastructure spending. Amazon's stock fell 10%. Alphabet fell 3%. The Nasdaq dropped 1.8%. The market saw the numbers and sold.
The Numbers
The individual announcements arrived over ten days. Together, they form a single picture.
Meta (January 29): 2026 capex of $115-135 billion, up from $72.2 billion in 2025 — a 59-87% increase, $4-24 billion above the $110.6 billion analyst estimate. The spending was described as driven by "investments in Superintelligence Labs."
Alphabet (February 5): 2026 capex of $175-185 billion, up from $91.4 billion — a 91-102% increase, $55-65 billion above estimates. The company reported $400 billion-plus in annual revenue for the first time. It also announced it would spend nearly half of that revenue on infrastructure.
Amazon (February 5): 2026 capex of $200 billion. AWS revenue grew 24% to $35.6 billion in Q4, but the stock dropped more than 10% after hours. The spending announcement overshadowed the revenue beat.
Combined: $490-520 billion. Half a trillion dollars. In one year. From three companies.
The Ratios
The raw numbers are staggering. The ratios are what the market is pricing.
Alphabet's $175-185 billion in capex on $400 billion in revenue means 44-46% of the company's revenue will go to infrastructure. Five years ago, Google's capex-to-revenue ratio was around 12%. It has nearly quadrupled.
Meta's $115-135 billion on roughly $165 billion in 2025 revenue would mean 70-82% of revenue spent on infrastructure — if revenue doesn't grow fast enough. Even with growth, the ratio will be far above any historical norm for a software company.
These ratios are not software ratios. Software companies historically spend 5-15% of revenue on infrastructure. What Alphabet and Meta are guiding looks more like a telecommunications company, a utility, or an energy producer — industries whose margins are structurally lower than software because physical infrastructure requires continuous reinvestment.
The Selloff
The market's response was immediate and broad. Amazon fell 10% after hours. Alphabet fell 3%. The Nasdaq dropped 1.8%. The Wall Street Journal reported that "investor fears that software companies are facing an AI-driven extinction event" had damaged stocks for months. Steven Sinofsky called the extinction thesis "nonsense." Workday was cutting 400 employees to invest in "priority areas."
The selloff was not about earnings. Alphabet reported record revenue. Amazon's AWS grew 24%. The market was not punishing these companies for their results. It was punishing them for what the spending implies: that the future of technology requires physical infrastructure at a scale that structurally compresses margins.
The Week's Arithmetic
The capex announcements did not arrive in isolation. Over the past week, the capital demands of AI had been the dominant theme:
On February 2, Oracle sold $25 billion in bonds to finance its AI buildout — the biggest high-grade US offering since Meta's $30 billion bond sale. The same day, SpaceX acquired xAI for $250 billion, absorbing a company that had raised $57 billion and was losing $1.46 billion per quarter.
On February 4, Nvidia neared a deal to invest $20 billion in OpenAI's $100 billion round. Cerebras raised $1 billion at a $20 billion valuation. ElevenLabs raised $500 million.
Add the capex: Alphabet's $175-185 billion, Amazon's $200 billion, Meta's $115-135 billion. The total capital committed to AI infrastructure in a single week exceeded $600 billion. The industry's ambitions require an amount of physical investment that has no precedent in the history of technology.
What Half a Trillion Means
$490-520 billion in annual capex from three companies is more than the GDP of Sweden, Belgium, or Argentina. It exceeds the combined 2025 capex of the entire global oil and gas industry. It is roughly what the United States spent on its highway system, adjusted for inflation, over sixty years.
The companies committing this capital are not doing it recklessly. They are responding to demand — Alphabet's cloud revenue grew 48%, Amazon's AWS grew 24%. But the market is answering a question the companies would rather not ask: if building AI requires spending like an infrastructure company, will the returns look like a software company's — or an infrastructure company's?
The stock prices on February 5 suggested the market's answer.