It’s easy if you throw 90+ mph, run. 6.5 sixty, or hit like a man at age 17-18. That accounts for about 30% of the guys who commit every year, who are pursued by schools. Most people who come to this board for advice, opinions or knowledge do not have kids who fall into that category. Most are pursuing the schools, not fighting them off.
It is not easy to get a D1 offer or become a D1 commit. Maybe it was for your son, and you should feel grateful. It’s not easy. Also, 10K+ players do not turn over every year in D1, it’s more like 3K.