Valid points except that the majority of people (perhaps cynical, but I think correct) act on what's best for them, not for everyone else, if someone making a film thought that it would be good for the film to take up 1000 phone numbers I don't think they would care about your points.

That said I can't see (m)any movies ever caring enough about something like this to bother, when there are still at least some 555 numbers they can use.