Well, that is true unless you are jbmrock (BC Törööö) and can win everything there is to win while training three 18 y/o's.
this might have been possible in the past, but while players are improving, and become significatly better then the draftees, this will become more and more impossible.
When I started out, my draftee was the best player in my team, a team I played champion with in division 2.
I don't think that these days someone can claim his best player is his draftee and he is playing champ in div 2 anymore.
draftees can just be respectable at highest, and although a 7 times respectable player might still perform real well, I doubt they will be able to win against the increasingly improving teams when seasons pass by...
They are not your friends; they dispise you. I am the only one you can count on. Trust me.