What governments are actually being asked to do
The letter does not ask for a ban. It asks for coordination tools: mechanisms that could, in theory, give regulators meaningful visibility into training runs, compute thresholds, and capability evaluations before deployment rather than after.
This is a narrower and more technically grounded ask than the 2023 open letter that called for a six-month moratorium and was signed by figures ranging from Elon Musk to academics with no direct lab affiliation. The current signatories are, by definition, insiders. They are not critics of the industry. They are people writing the code, running the evaluations, and shipping the products. That distinction matters.
But the gap between what is being asked and what governments can realistically deliver is wide. Compute governance, for instance, requires tracking the supply chain of high-end GPUs globally, something that involves export controls, chip manufacturers, and cloud providers across multiple jurisdictions. The EU AI Act addresses some of this. The US Executive Order on AI from October 2023 required companies to report on training runs above a certain compute threshold. These are not nothing. They are also not coordination at the scale the letter envisions.
The honest answer is that no government currently has the technical capacity, legal authority, or geopolitical alignment to implement what the researchers are describing. Which is not an argument against trying. It is an argument for starting earlier, not later.