Dylan Patel and Jordan Nanos on why the AI buildout can't slow yet
SemiAnalysis's Dylan Patel and Jordan Nanos argue the AI buildout is larger than the headline charts show, that its growth must decelerate by arithmetic even as demand still outruns supply, and that the real risks sit in financing, concentration, and the insecure clouds underneath.
The buildout is bigger than the famous chart says
A viral chart pegged AI spending at 3.6% of GDP; Patel says the real figure is closer to 5 or 6%, because US capex is heading toward $2 trillion next year and much of it serves demand abroad.
your capex in America is actually a lot of it's being used to serve outside of America uses
Growth must slow — but not because demand is weak
Capex growth is already decelerating from 116% a year, Nanos says — partly because the base is now enormous, partly because you run into hard limits on chips, capital, and how fast another gigawatt can be organized.
you can't just have tripledigit growth and accelerate the second derivative
Revenue always trails the capex that pays for it
Today's revenue reflects infrastructure bought years ago, so during a build the spend always looks ahead of the earnings; a $1 trillion bet needs roughly $250 billion a year to pay back over a six-year life.
the revenue always trails the capex
AI is a capital-for-labor swap — chip design already proved it
The number of US chip-design engineers has been roughly flat for twenty years while the value they create exploded, and Patel argues AI tokens do the same thing: capital, in the form of chips, doing the work of labor.
The number of American R&D engineers working in chip design has been basically flat for 20 years. And yet the economy for it has exploded
The $20 trillion Anthropic paradox
Patel says you cannot price an Anthropic IPO because it could fall to zero or reach $20 trillion — and the upside is the scary case, since a company that large would pool the gains so narrowly it could tear at society.
all of the growth is accumulating to a very small number of people. So like these things could like tear the fabric of society apart
An AI lab can be a better business than software
Patel's numbers put Anthropic's inference gross margins at about 75%, on par with the best SaaS, but with almost no customer acquisition cost and sticky spend — so the lab economics look like software's best case, not a thin-margin commodity.
the revenue has only been a straight line up on the chart and almost every customer's only grown on revenue for them
Nvidia is quietly financing its own demand
SemiAnalysis tracks roughly $588 billion of off-balance-sheet backstops from Nvidia — spanning GPUs, construction, memory, and fabs — with Nvidia often the investment-grade buyer that lets neoclouds raise debt, which Nanos reads as pragmatic, not a scheme, because real demand keeps taking the chips.
it just seems really pragmatic from Nvidia. They really uh want a wide diversity of customers
Nations treat neoclouds as infrastructure — most are insecure
SemiAnalysis found most neoclouds weak on basic security, to the point that open models can hack them and shared clusters have exposed other tenants' workloads — even a foreign intelligence agency's — all while compute is being bought as sovereign infrastructure.
most of these clouds are terrible at security