Apples and oranges. I don't see why we would want to penalize players for graduating early although I'm sure the NCAA will figure out a way to justify it when the bluebloods put enough pressure on it because lesser known programs are able to reload their rosters in a similar fashion to the big name players.
but it it is ok to punish someone who just believes they made the wrong decision about which school to go to? Plus I would like to see how many of these students end up graduating from grad school. It is a loop hole that is being exploited.