I just don't see the problem here. MOST jobs are not available to 18 year olds regardless of their talent, whether that be athletic talent, intelligence, political strategic talent, etc. Most top notch jobs require college degrees, or have a certain age barrier, etc. Proponents of no age limit: are you in favor of 18 year olds becoming lawyers if they can pass the bar? Why is law school required if there are kids who could just study and pass the bar? Are you in favor of 18 year olds running for President, or at least the House of Reps? I bet Mark Zuckerberg, d-bag that he seems to be, is certainly intelligent enough, and has the funds, to make a run for President...but he is barred by his age. Is that not fair too?
This is NOT a unique problem in our society. Let's not pretend that it is. There are way more important problems out there than these kids who are going to be FORCED to continue their top notch educations they would not have gotten otherwise and delay their potential NBA careers.