Oh shoot, sorry, I just realized I got confused. I misinterpreted the original comment (about the PDF) to mean that you're supposed to buy multiple physical cop

Oh shoot, sorry, I just realized I got confused. I misinterpreted the original comment (about the PDF) to mean that you're supposed to buy multiple physical copies too, and that nobody does that either. If that's not the case then that would explain it. Though then the question would be—is it not worth just buying the physical copy and passing it around?