I can imagine that good will may sustain options 1-3 temporarily, but I also imagine (in the specific case of assistants and receptionists) that high tech firms will seek to remedy these problems through automation which yields option 4 long term (Cortana, Alexa, Google Assistant). It seems like we're on a course to reach a point where we replace more jobs than we add, or that the education ceiling to do the job that it's replaced with is too high (eg: it's technically advanced).