Yeah, sure, these folks could bring their own cold lunches, but a fair number of them nonetheless prefer hot meals and cold beverages on demand even in the summer. The free market responds to their desires. ^^;
WHO? Who in their right mind ever thought the country needed or even wanted Cupcake Shops?
And Food Trucks? Sure. Spend $50,000 for a truck so you can sell ten dollar plates to people who want to stand outside in the heat and eat their lunch?
Who in their right mind thought we needed these businesses?
I think of it as the market at work. If it turns out these places don’t do enough business they won’t stay in business.
These were business ideas that people had, then decided to try to make a going concern business.