Three years ago, Sequoia partner David Cahn was one of the first people to do the math and put a number on on the implications of Silicon Valley’s titanic spend on AI infrastructure.
In 2023, he was reacting to Nvidia’s reported annual GPU revenue of $50 billion. Starting with that figure, and adding in the implied costs of operating the data centers and the margins for their operators, he deduced that $200 billion in revenue would be required to pay back the up-front investment.
He took it as a challenge, asking entrepreneurs to come up with AI products and services to make use of, and generate revenue from, all that infrastructure. Fast forward to today, adding up three years of hyperscaling, and Cahn’s got a new number on AI infrastructure spending for 2026: $1.5 trillion.
All told, he calculates that the AI industry will have to earn $3 trillion to justify all those chips and other data center expenditures. And that’s probably an underestimate—the rising costs of memory and the increasing use of exotic or inference-specific chips will drive that number up. “Recently,” he writes, “the required revenue per GW of CapEx has sharply increased due to these bottleneck dynamics and rising costs of construction.”
On the other side of the ledger, Anthropic is thought to have hit $60 billion in ARR, while OpenAI reportedly earned $13 billion in 2025 (although in November 2025, it said it was at $20 billion ARR) and is presumably making more this year. But there’s clearly a large gap to be closed.
Someone minding that gap is Torsten Slok, the chief economist at Apollo, the giant asset manager. In a recent note, he points out that the hyperscalers — Google, Meta, Microsoft and Amazon — are all predicting massive accelerations in their free-cash flow in 2028. That is, they expect to see the pay-back from all those chips they bought.
Image Credits:Torsten Slok/Apollo / Torsten Slok/Apollo
What if they don’t? Slok notes a risk we’re currently seeing across AI usage: More organizations turning to cheaper open weight models, often Chinese, not those built by the frontier labs, and o …