If anything non profits have a somewhat of a reputation for being a way to pay the top people big salaries without the pressure of having investors pushing for more profits & getting the image of being "good" mostly for free since it's a non profit.

Most of the food deliveries services are running using VC funds. I don't think there's much scope of profit here for a ~$5-$7/delivery charge having someone someone pickup and deliver a package along with other costs like building/maintaining the system, credit card charges etc,

Frankly, I feel something like peach which bundles multiple orders from a few restaurants is the way to go if you want to make money as a food delivery service.