DONE BEFORE... 
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In 2001 P&G filed for a patent almost identical to VegieFresh and FAILED!!!
Even better, in that application it cites the exact same reasons we do as to why baking soda is ineffective (surface area, exposure) and also specifically points out why coconut shell carbon and zeolites are effective, the difference between "adsorption" (VegieFresh) and "absorption" (baking soda).
The patent application even goes so far as to talk about the need for increased air exposure (our clamshell design) and a safe, permeable housing for the adsorbent materials (our DuPont Tyvek).
Unbelievably, the patent application goes on to talk about informing the consumer as to the benefits of the product and the need for distinct packaging and instructions to do so..."