First of all, just because you are an impact guy at a college doesn't make you a pro prospect. Just like being an impact guy at your high school doesn't make you a college prospect.
Secondly, I'm sure schools drop scholarships (some schools are notorious for it - I will not name names) but that is a pretty low class move. Considering the blood, sweat and tears a 4 year player has given a program if coaches start pulling money they will start losing players.
Every athletic department has turnover but baseball's crazy long schedule tends to create even higher turnover then some other sports. So again, punish guys for sticking around and you will soon have to recruit 20 guys a year because you will never keep players.
If anything, many coaches will throw these guys a bone for sticking it out. Like that NCAA commercial says, everybody is going pro in something - most will not be going pro in sports.
Rich
www.playinschool.com