Agreed (if you'll accept a couple of extra conditions: not just willing, but also able and available), but I don't see that as a simple supply-side glut driving

Agreed (if you'll accept a couple of extra conditions: not just willing, but also able and available), but I don't see that as a simple supply-side glut driving lower prices, because people are not widgets. The willingness to accept the lower pay in specific sectors reads more like an abusive status quo maintained by a cycle of exploitation, one I suppose those sharing their salaries are hoping to break.