Is a priveledge ticket on the tube the same as a privilege ticket on the railway? (If it's just a typo or spelling mistake then maybe the mods can change the title?.......)
My understanding is that LU are looking to get (almost) everyone using oyster (and progressively contactless) and this will include privs too. I concur that, IMO, most if not all paper tickets will disappear from LU, obviously through tickets that cross London will remain for the foreseeable future, but even then, as smartcard/contactless systems expand (and no doubt merge or become interoperable), we will see a significant drop in those too.