I don't think your conclusion about society's values necessarily follows. In a society that valued biomed more, you'd have to pay the same candidate a higher salary to get them to work in advertising.
Exactly, a perfect example of this is how society values cleaning ladies much more highly than brain surgeons or CEOs.
Usually you have to pay brain surgeons and CEOs orders of magnitude more money to take those jobs, when normally they might prefer to live off the glory of cleaning up after slobs.