Yeah, demand is totally inelastic to price.
In terms of total market, the effects are well studied in the field of labor economics.
Big producers can easily absorb the added labor costs. They outsource some elements of their labor (prep work). They simplify menus for better economies of scale. They cut back hours on marginal employees and add hours for high productivity ones.
Small shops without economies of scale struggle and go out of business. A restaurant owner that owns 1 restaurant is likely working full time to keep it afloat. The added time to respond to the current labor market can break the camels back. vs. McMegacorp that has people that sit around and optimize cost all day long.
So the trade off is more McDonalds and Chipotle and less Albertos burrito stands.
They are basically taking the economy of scale that a large chain previously exclusively had and bringing it to the market to street sales (e.g. mom & pop joints). They simply took what they were doing for institutional food service and expanded it because it's substantially more profitable for them than selling the raw ingredients.