The Sequence Opinion #872: The Cake Is a Battlefield: Who Really Controls the AI Stack

Full stacks vs layer specialists. That's the AI race.

When Jensen Huang draws AI as a five-layer cake — energy, chips, infrastructure, models, applications — he describes it as harmony. Every layer reinforces the others. Every successful application pulls demand down through models, infrastructure, and chips, all the way to the power plant that keeps it alive. It is a beautiful picture, and as a statement of physics it is correct.

But Jensen is selling the bottom of the cake, so of course he wants you to see harmony. If you are a strategist instead of a chip vendor, you look at the same diagram and see something else entirely: five margin pools stacked on top of each other, and a war over which of them you can fuse together before the layer beneath you turns into a commodity. The cake is not a structure of mutual reinforcement. It is a battlefield with a vertical axis.

So the right question is never “how many layers do you own.” It is: do you own the scarce layer, and the seam right next to it?