not everyone has Internet access for timetables or to buy ticketsOr to check bus apps. We were at Park Lane yesterday and people there had no idea that their 8 or the arriva 22 were going to be no shows. The poor saps waiting for the 22 had another hour to wait for the next one.
Of course it's lamentable that the displays at bus stops don't relay this information to passengers, especially in bus stations.