Can we stop tossing names out there as though they prove a point? Larry Bird, Kevin Garnett, LeBron James, Freddy Adu. Maybe Freddy Adu's high school coach would have molded him to become the next Pele. Maybe his college coach would have shot him in the chest. If you're really interested in whether things would have been better or worse for that guy, you don't have any way of knowing. You can't point to a successful player and infer that he would have been more or less successful the other way around.
You have a 100-year-old uncle who smoked a pack a day. That doesn't mean smoking is a good system.
Jordan played three years of college and became the greatest that ever lived. That doesn't mean college is a good system.
The fact of the matter is, this is an argument about principle, not about quality of play. NBA GMs will make the most entertaining product they can with the pool of personnel available. The quality of that product can only go down when you restrict the pool.
The pool is only down for a season or two as the player age catch back up.
After that, the pool is the same except for more training before they start.
Same talents. More training before they enter the league. More time to scout.
I still don't see the drawback for the NBA.
For the league, there isn't a drawback. It makes perfect sense why they would want to champion it.
That's not entirely true. Ask the Cavs if they'd be happy about missing out on their first two years' worth of the revenue LeBron brought them.
If you assume adjustments to the rookie contract would mean he'd've stayed there two years longer, ask the same question of the Heat.
And you can do the same math to a lesser degree for guys like Kobe, Howard, KG, the one-and-done guys who'd have to stay an extra year now, etc. The best players make their teams, and the league, money basically from Day 1.
The best players do. But these are the same owners who locked their players out because they were giving massive contracts to guys who didn't deserve it. Because their talent evaluation is, apparently, so bad that they need to save themselves from the contracts they give out (Hi, Amnesty Clause!, what's up, mandating shorter contracts?) and they even manage to screw that up (Looking at you, NYK).
The longer players stay in college, the more obvious the "cant-miss" guys become. That's what the NBA teams want - players they're sure will be stars.
As foul pointed out they miss on 4 year players all of the time. Below is the list of #1 picks from 1987 to 2008. There are 3 all time greats (Lebron, Shaq, Duncan), Lebron was a high schooler, Duncan graduated, and Shaq was 3 years (though he started college at 17 and was thus 19 when drafted). There were/are 5 other MVP or surefire HOFers (Robinson, Webber, Iverson, Howard, Rose). Webber and Iverson were sophomores, Howard was a high schooler, Robinson graduated (and then went military), and Rose was a one and done. Two were foreign players, Ming was fairly successful, Bargnani not so much. Of the remaining players there are a number of 3 and 4 year college players that were what you would call busts like the Kandi man, Manning, etc. and plenty of others with only moderate careers like Joe Smith and Kenyon Martin. Kwame Brown was clearly a bust as a high school player as well, but he was the only one. The reality is, no amount of college is going to stop NBA gm's from making poor selections in the draft and the reality is, the NBA gm's generally got it right with the high school kids. The ones that weren't ready dropped (like Gerald Green) and the ones that were were generally taken at or below where they should have been. Sure there are exceptions, but by and large they did a much better job with the high school players than they did with the guys that went to college.
2008 Derrick Rose Chicago Memphis
2007 Greg Oden Portland Ohio State
2006 Andrea Bargnani Toronto Italy
2005 Andrew Bogut Milwaukee Utah
2004 Dwight Howard Orlando SW Atlanta Christian Academy (GA)
2003 LeBron James Cleveland St. Vincent-St. Mary HS (OH)
2002 Yao Ming Houston China
2001 Kwame Brown Washington Glynn Academy
2000 Kenyon Martin New Jersey Nets Cincinnati
1999 Elton Brand Chicago Bulls Duke
1998 Michael Olowokandi LA Clippers Pacific (Cal.)
1997 Tim Duncan San Antonio Wake Forest
1996 Allen Iverson Philadelphia Georgetown
1995 Joe Smith Golden State Maryland
1994 Glenn Robinson Milwaukee Purdue
1993 Chris Webber Orlando Michigan
1992 Shaquille O'Neal Orlando Louisiana State
1991 Larry Johnson Charlotte Nevada-Las Vegas
1990 Derrick Coleman New Jersey Syracuse
1989 Pervis Ellison Sacramento Louisville
1988 Danny Manning L.A. Clippers Kansas
1987 David Robinson San Antonio Navy