Administration captures the profit in education, not rank and file professors. https://www.the-scientist.com/profession/textbook-adoption-how-do-professors-sel

Administration captures the profit in education, not rank and file professors. https://www.the-scientist.com/profession/textbook-adoption-how-do-professors-select-the-right-one-60192 https://www.the-scientist.com/profession/textbook-adoption-h... > Many professors and departments encourage such practices, which can be viewed as either bribes or legitimate marketing ploys. Richard McKenzie, a professor of economics at the University of California, Irvine, was appalled at schools' requests for inducements to adopt his textbook The New World of Economics (Homewood, Ill., Irwin Publishing Inc., 1989), written with Gordon Tullock. "A department at a Southwestern university chose our book and two others, and put them up for auction," says McKenzie. "They would adopt the book with the biggest side payment." So McKenzie began talking to publishers' sales reps and quickly learned that monetary enticement to adopt a book, although not rampant, does happen, and not just in economics. In science, these extras are encountered in large introductory biology and chemistry courses--but less so in physics and geology classes, which tend to attract fewer students.