Apple doesn't have a laptop in the budget of COLLEGE STUDENTS, either. Every Mac BEGINS at $999 (for the paltry 11" screen and 128GB drive). Realistically a user would want the $1200 Mac laptop but sure, let's continue talking about the $999 one. Unless they are a Mac user, he/she THEN ALSO HAS all the other reasons of not buying an expensive new Mac to learn to use.
Students can get very nice PC laptops for $750. There's almost no reason for the average student (or above average) to plunk down $1000 (or more) on a PC laptop for college to write papers, create presentations, check email, and do class participation stuff on a collaboration website. I wouldn't steer college students to $500 laptops, but yes, some do buy them because of their budget and/or their realization that they just need something to write some papers from time to time.
MacBooks are actually really popular on my campus. These students would sell their arm for one.