Since leaving Tech long ago, I have spent all but 7 or 8 years out of state. When I lived in state, I had season tickets and interacted regularly with fellow GT fans and alums. As such, the game and the school were much more in the forefront and occupied more of my attention. Moving out of state, I am shocked to see a car with a GT sticker or a person at the grocery with a Tech polo. The news media has declined and I don't subscribe to anything now. What little information I get about Gt is from this site. It moves to the backburner a bit somehow. Now consider all of my Tech buddies - only 1 stayed instate. The rest are scattered and NONE of them participate on this site or any other of the 2 or 3 Tech sites. Probably aren't aware even of their existentce Busy with careers, families, other things.
My point? We have smaller amount of grads and have more people move out of state where somehow or other the games seem to lessen in importance.
Other things to think about. I do think Gt grads have more of a hard ROI mindset as you suggest. A byproduct of our training I suppose. The other thing. we have talked before about the environment at GT. It was not one that generated a lot of touchy-feely, dear ol' alma mater types of feelings that some of my friends seem to have towards their schools. Our mindset was to "get out". I think that speajks volumes to the feelings Tech grads have towards the schools.
Contrast to the private school were I last taught. Tuition was over 25k per year. Despite spending this kind of money, I had kids tell me that there school of choice was Bama. Ole Miss. Auburn. and that they weren't looking elsewhere. Bc that's where the parents and grandparents went. My thinking was why spend that kind of money as a parent to send your kid to one of these places but as you suggest (and I agree) these people have a different attitude towards their money than most Tech people I know. And finally, out of my GT friend group, not one of us had a kid go to Tech. My oldest ws accepted but didn't like the vibe on his campus tour. This after growing up going to games as a kid at BDS. How does this hurt. We don't seem to have the multi-generational faamily experience to the degree that these large state schools do.