For some of the couples, yes. Some more might result from corruption or fraud (e.g. "I'll make sure my colleague processes your paperwork... he'll make sure you get accepted")
Or, less cynically, some could be because it's easier for spouses of someone who is in the bureaucratic system to navigate/utilize it.
Or, less cynically, some could be because it's easier for spouses of someone who is in the bureaucratic system to navigate/utilize it.