I don't know if I agree. He is a future professional basketball player. Perhaps (likely) not the NBA but if he wants to be paid to play basketball he will be paid to play basketball. There are very few people his size and agility level in this world. If he works super hard, he might be able to play at a professional level very close to the NBA. I am not sure what that is, maybe the top leagues in Europe (I am just guessing). However, if he doesn't work really hard, he might end up in some obscure league making $20,000 a year and never doing anything with his God given talent.
Now fast forward past his playing days whether that is three years or ten years. The higher level he plays the better chances he has to become a college coach or an announcer or many other well paying jobs associated with basketball.
Perhaps in his case, his basketball work this summer truly is the most important thing in his life.