I'd be interested in doing an experiment to act like I'm in high school and want all the info on college applications and to see where I end up.
From there I picked: Rice, Rutgers, MIT, Worchester Polytechnic, UMass Amherst, Virginia Polytechnic. Clearly, that was not just one state.
After picking, phone the schools. Ask them to send applications. More applications may arrive by surprise if you do well on the SAT or ACT.
When an application arrives, put it in a typewriter and carefully type into all the fields in the form. Send it by mail, physically, and wait to get mailed a response.
It's almost trivial to chart one's income possibilities based on where you graduate from and what degree you get. The knowledge about how to get into a tech job, or a high finance job, or get into medical school, or get hired by a top legal firm is available to everyone whereas it was limited before to those who knew people who knew these things.
We know what cities and suburbs of those cities will lead to maximal probabilities of "success", we know which schools have the highest achieving kids (or the ones with the richest parents), etc. It saves a lot of time to be able to filter real estate listings by greatschools.org metrics before.
Now I can read about this stuff on reddit and learn the basics of how everything works.
A bright kid with an internet connection can leverage that even if they're in a social network or community that doesn't understand any of these things.
The remaining problem is unknown unknowns. If you don't know what exists, it can be hard to know what to ask. You can't search 'Best X' when you don't know what X is. If you're online though, you may be able to see someone mention it and go from there.
I would argue that the people who succeed at that are pretty bright anyway, but are just applying their skill in an undesired way.