Why is there not a market for People Chow?

You can go to the store and buy a 25lb bag of Dog Chow or Cat Chow or even Pig Chow or Wildlife Chow.
Would you be willing to purchase a product that came in a big bag that provided all of the essential vitamins and nutrients necessary for your existance just to have on hand for those times when you were in a hurry or just didn’t want to cook; particularly if it was a soft, chewy media and not the hard dried stuff that is most common?
What about smaller containers that you could take camping or store in your basement or survivalist shelter?
Imagine the possibilities!