I don't see why to be honest. Feels like if an air force is investing into an Awac, they might as well get a big one. An Awac is already a "luxury" purchase.Once the development of the KJ-600 has been completed and ready for PLAN service, will it become a viable AEW platform for export to friendly countries, even though it will be land-based only?
Personally, I believe that KJ-600 is suitable for countries with sizeable air forces but having tight budgets which prevent them from acquiring larger AEW(&C) aircrafts like the KJ-500.