In Arthur C. Clarke's novel "2001: A Space Odyssey," by 2001 interplanetary space travel is possible and there are cities on the moon. Science fiction writers predicted that by now we would have flying cars and household robots.
Predicting the future has never been an exact science. Probably because we start with the bias that things will get a lot better or a lot worse when generally what happens is incremental growth on the path we are already traveling. So it is with advertising.