It’s not a planned central economy. It is self-reliant local communities within regional bounds, like a fault-tolerant distributed system. They would trade primarily with adjacent regions stuff that they don’t or can’t produce locally. Knowledge, information and education should flow freely everywhere, enabling peace. People should feel comfortable living in their birthplace and should have no motivation for economic migration.
Why do you need an airplane in a local community? Also, silicon chips aren't exactly the type of thing that you constantly need to buy every single day nor are they expensive to ship. Using the same phone or laptop for years instead of buying a new one every single year is highly viable.
Your present local community relies on massive quantities of silicon chips and other specialized goods that are ultimately brought in by planes trains and automobiles which themselves depend on specialized goods.
