I'm assuming it has to do with the protectionism of lunch sales in the cafeteria as well as administration wanting to keep a strong grip over all activities in

I'm assuming it has to do with the protectionism of lunch sales in the cafeteria as well as administration wanting to keep a strong grip over all activities in the school. Schools are ridiculously controlling over even the smallest minutiae, nevermind free-enterprise involving students within the cafeteria. I remember many getting suspended for fights or other things that occurred in the neighborhood outside of school and school hours.