The law is in place to prevent over-collection of animals from the wild I assume.
The exception for hots is, I assume, mainly due to rattlesnake roundups, and possibly for venomous-christian-nutters.
It wouldn't be too hard for any of you GA residents to put together a petition to change the regs. There would be plenty of support and plenty of evidence to show that 99.99% of the corn snake market is captive bred animals, leaving the majority of the wild corns in GA alone.