Nvidia has 100+ companies behind an agent-safety stack, and OpenAI is not a public supporter even though it is collaborating on OpenShell, the open-source sandbox component. For production agent teams, the key implication is that agent containment is moving toward a combined software-plus-hardware control plane: you can adopt pieces like OpenShell, but the full enforcement story appears tied to proprietary Nvidia hardware, creating both a stronger safety path and a potential infrastructure lock-in.