The B300 grey market isn't a supply story — it's a pricing signal

A B300 server costs roughly $550,000 in the US. That same server is reselling in China for around $1 million. The obvious frame is scarcity — export controls cut supply, price goes up. That's not wrong. It's just not the interesting part.

Here's the thing. A market clearing at $1M tells you the buyer's willingness to pay is at least $1M. Nvidia is selling at $550K. That's not a supply problem. That's Nvidia leaving $450,000 per unit on the table — and letting smugglers capture it instead. Export controls didn't create a shortage. They created a monopoly rent, and they handed it to the grey market. Nvidia wins on volume and installed base. The unlicensed reseller wins on margin. Nobody asked Nvidia how they feel about that split.

The AMD argument floating around is also wrong, but for a different reason. The claim is that AMD can't gain share here because customers will rent Nvidia capacity rather than switch. That's backwards. The reason AMD can't gain share in this market isn't rental economics. It's that the installed base, the software stack, and the support network are all Nvidia. A buyer who can't get a B300 legally isn't going to retrain their inference pipeline on ROCm while paying $190,000 a month to rent capacity. That's the tell. This is what a real moat looks like — not a press release about one.