What is the end result? Something like you are to reside in this town an we'll let you out twice a year for vacation and XMas? Want to move to other city - there is a waiting list 10 years long.
Maybe if the entire world reaches a broadly similar level of human development, including comparable levels of infrastructure and social support, migration can be opened up quite a bit.
But right now it would simply mean that developed nations would see a flood of people immigrating just to get those great services, and it would crush their system. So we need controls to keep the change manageable and ensure that the tax base scales appropriately to maintain the expected levels of service.
>"Controlled migration for the foreseeable future."
Never mind migration. Even travel gets worse. We've had relatively frictionless travel between first world countries. Now it it only 3 month instead of 6 and online visas like ESTA. So it does not seem to get any better and does not correlate so "comparable levels".
