Sudafed has been taken off the "over the counter market" in many places. Most manufacturers have removed psuedoephedrine from their products and replaced it with other decongestants. It did not affect the street price of meth or cause an increase in home invasion robberies or pharmacy robberies.

I get the point you were trying to make, and don't disagree with the caution about unintended consequences, but next time pick an example of something that hasn't already happened without any of the consequences you predicted actually happening.