A) Books cost money per unit to make and distribute (unless we're talking about e-books)Floppertje said:I got a copy of arcGIS for free, but that's about it. Why should we get software for free and not books though?
software is usually on university/college machines anyway, you can use it there. it makes more sense to me to make books free.
B) Text books generally have no market outside academia
C) Not all colleges have computer labs open 24/7, and not all students are able to do their school work at a reasonable hour (work, family, etc)