They can't. It would require a lot of structural changes. They arent equipped for.They can they just dont want to. If you move there and choose to adopt the culture you should be welcomed but we know that isn't the case
Even a progressive, western Nation like norway opened the doors slightly but neglected to allocate immigrant services, or set up a central govt organization to manage them leading to gang violence and literal grenade wars in oslo perpetrated primarily by immigrants.
Or alternatively, look at a place with a history of immigrants like Canada which had all of the things they needed in place, but was inundated by Indians who gamed the system and refused to integrate.




