Well, it would collapse down to a new equilibrium, at least.

From "Here is your mobile phone, fully-furnished apartment, preloaded debit card, free medical, dental and university, and now we'll fly in your 7 closest friends and relatives, too" to "three hots and a cot". 

 It would have to keep getting less generous and more restricted, the longer the border was open. 

 True.

Requirements can and probably will at some point escalate to proof-of-violence against regime-citical symbols and persons.

That and an expected level of (self-) loathing, poor self-care and emotional disregulation.

You know, like they already select for...