⚠ AI Margin PressureModerate threat

Amazon (AMZN) — threat to the moat

AI capacity is bought with $40B quarters, much of it at Nvidia's margins — which become AWS's costs.

The profit engine's margins are the thing the whole company leans on, and the AI boom presses on them from two directions. Building AI capacity is staggeringly capital-intensive — Amazon bought $54.2 billion of property and equipment in the second quarter of 2026 alone1, most of it for AWS and AI — and that spending weighs on free cash flow now against returns that arrive later. Much of the hardware, moreover, is bought from Nvidia at Nvidia's fat margins2, which become AWS's costs.

Technology and infrastructure expense, 2019-2025 ($B)$35.9B2019$42.7B2020$56.1B2021$73.2B2022$85.6B2023$88.5B2024$108.5B2025Amazon Forms 10-K FY2020-FY2025
The line that carries data-centre depreciation grew 23% in 2025 to $108.5B, after barely moving in 2024.

The danger is that AI turns out to be a lower-margin kind of cloud, at least for a while. Renting out expensive GPUs may earn thinner returns than AWS's traditional services until the capacity is fully utilized, and management itself has acknowledged that free cash flow is strained during the heavy build-out. If AI grows fast but at lower margins than the cloud it is replacing, the 57% share of Amazon's operating profit that AWS provided in 20253 could quietly thin even as revenue climbs.

Amazon's own silicon is the hedge. Its Trainium chips, which it says deliver roughly thirty percent better price-performance than comparable GPUs, let AWS escape some of Nvidia's margin and control its AI cost structure in a way rivals renting chips cannot. As utilization rises and Trainium scales, the early margin drag should ease, and so far the numbers run the other way: AWS's operating margin was 39.4% in the second quarter of 2026, against 32.9% a year earlier4.

Judge it moderate. The AI build-out genuinely pressures near-term margins and free cash flow, and a prolonged period of low-return AI capacity would matter to the engine that funds everything — but Amazon's custom silicon and the maturing of the capacity point toward margins recovering as the investment is monetized, not toward a permanent decline.

References
  1. ReportedBuilding AI capacity is staggeringly capital-intensive — Amazon bought $54.2 billion of property and equipment in the second quarter of 2026 alone, most of it for AWS and AI — and that spending weighs on free cash flow now against returns that arrive later.
    Amazon.com Inc., Form 10-Q for the quarter ended June 30, 2026 — purchases of property and equipment $54,208M in Q2 2026; remaining performance obligations of approximately $496 billion (weighted-average remaining life 6.4 years), after OpenAI expanded its existing $38.0 billion commitment by $100.0 billion over 8.0 years in Q1 2026 and Anthropic expanded its commitment by more than $100.0 billion over 10.0 years in Q2 2026; upward adjustments to private equity investments of $50.5 billion in Q2 2026 and $62.8 billion in the six months, primarily nonvoting preferred stock in Anthropic; about $640 million of IEEPA tariff refunds recorded mainly as a reduction to cost of sales; shipping costs $27.9 billion against $23.4 billion — Q2 2026 — quarter ended June 30, 2026 · publ. July 2026 · source ↗
  2. ReportedMuch of the hardware, moreover, is bought from Nvidia at Nvidia's fat margins, which become AWS's costs.
    NVIDIA, Q1 FY2027 financial results (press release + CFO commentary) — Q1 FY2027 — quarter ended Apr 26, 2026 · publ. May 2026 · source ↗
  3. ReportedIf AI grows fast but at lower margins than the cloud it is replacing, the 57% share of Amazon's operating profit that AWS provided in 2025 could quietly thin even as revenue climbs.
    Amazon.com Inc., Form 10-K, FY2025 — segment results (net sales North America $426,305M, International $161,894M, AWS $128,725M; operating income $29,619M, $4,750M and $45,606M of a consolidated $79,975M, against $24,967M, $3,792M and $39,834M of $68,593M in 2024), net sales by product line (online stores $269,287M, physical stores $22,561M, third-party seller services $172,162M, advertising services $68,635M, subscription services $49,619M, AWS $128,725M, other $5,935M), net income $77,670M, and 2025 charges of $2.5 billion recorded in Q3 2025 primarily related to the settlement of a lawsuit with the Federal Trade Commission — Fiscal year ended December 31, 2025 · publ. February 2026 · source ↗
  4. ReportedAs utilization rises and Trainium scales, the early margin drag should ease, and so far the numbers run the other way: AWS's operating margin was 39.4% in the second quarter of 2026, against 32.9% a year earlier.
    Amazon.com, second-quarter 2026 results release (Form 8-K, Exhibit 99.1) — net sales $200.6B (+20%), operating income $27.5B (13.7% margin), AWS sales $42.2B (+37%, fastest growth in 18 quarters, $169B annualized run rate) and operating income $16.6B (39.4% margin, against 32.9% a year earlier), advertising $19.8B (+26%), online stores +15%, third-party seller services +16%, net income $62.6B including $53.4B of non-operating income primarily from investments in Anthropic, TTM operating cash flow $161.4B against net capital purchases $169.0B and free cash flow -$7.6B; AWS AI business and chips business each above a $25B run rate; Trainium commitments from Anthropic and OpenAI; Amazon Leo at nearly 400 satellites, enough to begin initial service this year; Zoox's NHTSA Part 555 exemption to charge for rides; Alexa+ triers signing up for Prime at a nearly 25% higher rate; supplemental table Q1 2025-Q2 2026 (WW shipping cost growth 3%, 6%, 8%, 10%, 14%, 19%; WW paid unit growth 8%, 12%, 11%, 12%, 15%, 17%; seller unit mix 60-62%; North America TTM operating margin 7.4%); Q3 2026 guidance of $197.0-202.0B net sales and $22.5-26.5B operating income, with growth nearly 400 basis points higher excluding Prime Day in both years — Q2 2026 — quarter ended June 30, 2026 · publ. July 30, 2026 · source ↗
Sources
Generated September 22, 2026