(a) in many ways its user-interface story is not really all that unfamiliar. Sure, their buttons are in hardware, and their storage is tape, but they still scan in some documents and draw a thingy on the screen and print it out. Maybe there's less scanning in and printing out today, but it's not hilariously foreign just yet.
(b) the very thing they're doing --- making ads in the yellow pages --- is exactly a main thing whose lunch is completely eaten by the descendants of the technology on display. "Hey look at how much the yellow pages advertising department can benefit from these techonological marvOM NOM NOM NOM NOM".