The courier must arrive before the food is ready and wait for it. The food must be packed so that the least damage occurs. (eg. crispy needs to breathe, yet be kept warm) The courier must deliver it in under 10 minutes worst case, but within 5 minutes on average.<p>Like the constraint of the speed of light on networks, no amount of money can change this. Some food ages like VOIP traffic.<p>Pizza and Chinese delivery do well in the worst case. They reheat well. Look at what airlines serve.<p>To survive these new delivery services need to make a profit delivering food that is unprofitable for individual establishments to deliver themselves.