You seem to think the market for jobs operates with something approaching market economics. If this were true then we should be running PSAs to encourage people to become investment bankers because the incredibly high salaries paid are indicating a severe shortage. Instead I see commercials encouraging people to become teachers - if there were really a shortage wouldn't salaries rise by market forces?

The truth is economists have long recognized that the job market is different than the market for most other products. For one thing wages are "sticky," they don't change every couple of days the way the price for gas or a loaf of bread does.