Critical roles in global management will continue to eat grass-fed burgers and fresh produce. Everybody else will survive on liquified puree mealworms.
Actually, I am dying to do a special Vault-OS project on a custom designed temperature controlled feeder tank for mealworms to use in permaculture feeding fish. I just wrote it down on a potential list of "killer apps" for Vault-OS I want to work on as soon as I release open source. Permaculture fish in a small system will grow like crazy on mealworms and duckweed, apparently. There is possibly no better way to keep the fish fed on low energy harvested food than mealworms which are also very renewable and low maintenance.