As you spread out the population, the cost of FedEx deliveries is going to grow. Now you can drop off goods in a city via a highly efficient train, have that switched to a truck, and have it delivered to the end customer.
If everyone is off the grid in the wilderness, that train becomes a lot less useful to deliver goods. Now you've got to reach a larger area to serve the same number of people.
> Web + Fedex means a lot of jobs can be done remotely
A lot of jobs can be done remotely, but that doesn't mean they could be done remotely without cost. Many people are less efficient when working remotely. I find communication to be much harder when remote than when in person, especially as issues get more complex.