Meal sharing concept is too finicky IMO. These places doing pre-made, delivered food are on the right track but I imagine the delivery component is a heavy cost.

I'd be curious to know if any of the food delivery apps have incentivised delivery to grouped buyers. e.g., $10 if someone buys, $8 if 5+ people in the same street buy, etc. Encourage delivery efficiency and also delegate marketing to word of mouth.