Build it and they
will prompt.

This year, five American companies will spend nearly as much building AI infrastructure as the United States spent building the entire US Interstate Highway System, a project that spanned 36 years.

Comparison · Inflation-adjusted to 2025 USD

One year of AI capex vs. US megaprojects.

Dot-com / Telecom Fiber1996–2001

5yrs

$850B

Interstate Highways1956–1992

36yrs

$640B

Big Five AI / datacenter capex2026

1yr

2026 · one year

$558B

Apollo Program1961–1972

11yrs

$309B

Marshall Plan1948–1952

4yrs

$180B

Manhattan Project1942–1946

4yrs

$33B

Panama Canal1904–1914

10yrs

$12B

Transcontinental RR1863–1869

6yrs

$2.5B

Hoover Dam1931–1936

5yrs

$1B

Erie Canal1817–1825

8yrs

$0.23B

2026 AI / Datacenter Capex · Composition

Five companies. One year.

Amazon

$120B

~60% of $200B total · AWS datacenter buildout (remainder: retail fulfillment, logistics)

Alphabet

$153B

~85% of $180B total · Google Cloud + GPU clusters (remainder: YouTube, offices, other)

Microsoft

$128B

~90% of $142B FY26 consensus · Azure AI capacity

Meta

$119B

~95% of $125B total · near-entirely AI infrastructure

Oracle

$38B

~95% of $40B total · OCI AI capacity (funded partly by $45–50B debt raise)

On method: Each figure is the AI / datacenter-attributable portion of each company's reported total 2026 capex guidance (from SEC filings and earnings releases). Hyperscalers don't disclose AI capex as a separate line item, so we apply a blended share per company based on publicly available sell-side commentary and SemiAnalysis datacenter tracking: Amazon ~60% (the remainder is retail fulfillment and logistics), Alphabet ~85%, Microsoft ~90%, Meta ~95%, Oracle ~95%. This methodology is our own. Aggregate: $558B AI-attributable on ~$687B of total reported capex. The comparison bar uses the AI-adjusted figure, not the headline total.

Hyperscaler capex totals: SEC filings on EDGAR (2025 10-Ks, Q4 2025 and Q1 2026 earnings releases). Megaproject inflation adjustments to 2025 USD: Planetary Society (Apollo Program), Wilson Center (Panama Canal), Brookings Institution (Manhattan Project), CRS / FHWA (Interstate Highway System), LA Times / Richmond Fed (dot-com fiber build-out), Hoover Dam Archives, BLS CPI series. AI / datacenter share methodology described alongside the chart above.