You will need a display that can show the full page comfortably, that is true, but a 27inch monitor or a large iPad will do. I'd prefer something more flexibel

You will need a display that can show the full page comfortably, that is true, but a 27inch monitor or a large iPad will do. I'd prefer something more flexibel than PDF as well, but all alternatives compromise on quality and/or ease of use. There seems to be no market for good looking digital documents other than PDF.