As someone who has worked for the county HS league for the last 20ish years, I've seen all numbers of talented people come through, and almost none of them have gone on to play even DIII college, let alone DI. I can literally count on 1 hand the number of kids who played Varsity Hockey and then went on to play NCAA college. There have been plenty who have gone on to play College Club, but NCAA level, just doesn't happen.
Like it has been said throughout this thread, if a kid is going to go somewhere, they will have been noticed and already be there. Sonny Milano came from Massapequa, NY. Our HS league had no idea who this kid even was because he never played a single game in it. He was already gone and in Cleveland playing by the time he was 15 years old.