I am in Spain and the only restaurants that these services propose are in a 5km radius so it is often easier/faster to walk, cycle or take the motorbike to said place. The apps hide all stuff on other sides of the city so I wouldn't be able to order from 50km away anyway.
In the US and none of the food delivery services deliver from some place as far away as 50km. I don’t know why you think that would be necessary in the US. That being said I have never received a food delivery that was cold or that wasn’t delivered in a timely manner.
I was poking fun at the fact that distances in the US tend to be bigger than e.g. in Europe, I figured that the delivery apps don't allow for that much of a range. Since I've read the complaint about cold food frequently, but like you have never received cold food, I figured it must be some US specific thing (but I guess not).
If the restaurant is 30 miles away it's also going to be cold if you pick it up yourself and drive all the way home. And you'll be driving roughly twice as far, assuming a delivery drivers was positioned close to the restaurant.