Odds are you'll never see this. Manufacturer's of the platic foil bags for chips (aka Frito Lay, Sun Chips Doritos) invented a resealable bag in the mid 90s that added NO NET COST to the food company. It was never used. Why? Because already purchased bags of chips would take longer to go stale and consumers would purchase less bags resulting in lower top line revenue.

Half drunk-drank-dranken(?) cans of soda get tossed. Even if this added no net cost to the bottlers (ie Coca Cola Enterprises) it would still result in reduced top line revenue from a lower rate in product turnover. From a consumer perspective, this simple device is awesome. From a business perspective, I would touch it with a ten foot pole.