[ryandrake]

If employers are constantly complaining about a shortage, I would argue that their idea of the "market rate" is not correct.

I want to buy a BMW M3, but I will only pay $5,000. I can't find any, therefore there is a shortage of BMWs??

[yompers888]

To frame it another way, the work they want to do isn't worthwhile enough to justify paying the people who would be needed to do it.