Is the Prescription Drug Shortage Being Created by Big Pharma?

Ed Silverman on Pharmalot posted this: 

Lower Drugmaker Fees To Combat Shortages?

In response to the worsening shortage of prescription medicines, a coalition of more than 30 groups representing physicians, medical centers, hospitals, pharmacists and a large generic drugmaker has written Congress asking for incentives to be created to staunch a crisis that is jeopardizing patient safety across the US.

[...]

Specifically, the coalition suggests that the FDA could offer reduced application fees for medicines in short supply or discounted fees if a drugmaker demonstrates that its contingency plans are sufficient to reduce the risk of a shortage if production is halted.

This begs the question: have the drug companies been reducing the production of medications to artificially create the shortage in order to force the FDA to change policy in a way that favors Big Pharma's bottom line?  Much in the same way Big Oil seems to do routine maintenance on refineries every summer.  One of Pharmalot's readers raised this question last month, when the FDA looked at allowing lower-cost imports to deal with drug shortages.

Don't these people make enough money as it is?