Sebi Salazar & Herc Gomez actually talked about this in their latest show. They were very real. youtu.be/QmoSWREtPFU?...
from what I've read recently, the actual answer is that we're very bad at developing youth talent because we built a rudderless hodgepodge of rent-seekers and grifters who charge parents five figures a year for subpar trainers and scant opportunity to advance.