The people who would need the food (because they don’t plan for 24 hrs much less a long period time) don’t have a freakin clue how to grow it! They would probably do what they do best...steal it!
Well, then let us pray the Big Corporation food distributors will judiciously control the flow of foodstuffs to the market, to assure that only the more deserving get an adequate share, and the less deserving are forced to scrabble for whatever is left over.
Wait. Kinda ALWAYS been like that in despotic societies. Artificial scarcities are a great way to control the distribution channels through price.
Human beings have been known to subsist on eating grass along the roadside. Great, we won’t have to use those pollution-belching power mowers any more, will we?