Honestly, food delivery from restaurants is one of these things that is a big economic mismatch. The restaurant is spending tons of money on their nice dining room and part of the price of the food is supposed to be the experience of eating there. Yet, when you are ordering delivery, you are getting a subpar dining experience, plus you have to cover the additional cost of transporting the food. This means that someone is getting squeezed --- the restaurant is not getting paid enough, the delivery person is getting paid peanuts, or the buyer is having to pay a ludicrous price for the food.
If half the business is delivery, then the dining room can be half the size and there can be fewer servers. That saves a good fraction of the cost. Apply those savings to a delivery driver, add a $5 delivery fee, and the math can work out fine.
