60% to 70% of the young people leave the state by the time they are 30. I would bet that percentage is greater for UW alumni.
1700 students graduate annually. Let's say 80% leave, that's about 1400. Getting their kids in UW boosts enrollment and re-engages those alumni.
I agree with the gameday experience thoughts and think we need to engage/recruit alumni harder which will take economic incentives. Maybe we can't afford it but those are the types of things within our control. I don't think it would be unrealistic to boost enrollment by 10% by the right incentives for out of state alumni. Financially feasible? I have no idea.