When it comes to a legacy technology that badly needs to be disrupted, it's hard to imagine a better example than the college textbook.
Students have to lug these anachronisms around in backpacks, only to read a chapter here and there as assigned by their professors. New editions appear every two or three years, rendering the older editions essentially worthless.
Second-hand bookstores do a thriving business on campuses as students try to stay within their budgets. Book-sharing, renting, and lending as well as illegal copying all occur as well.
A professor trying to teach from a core textbook in many subjects often finds it resembles the Winchester Mystery House, with chapters added on willy-nilly to a structure that originated many editions in the past, often decades ago.