Labor is the largest cost to pretty much any company. Food margins are notoriously low that’s true but in theory with slightly raised prices and volume (because of the increase people have more money) it can equal or beat the profit beforehand.

When the wealthy get money they hoard it. When the poor get money they spend it on all the things they’d been cutting back on to stay afloat such as going out to eat.

There would be some point where this stops holding true and inflation just screws everything but we’re a ways off that point.