Comment by 3jckd

I don't think it's really feasible, for the reasons you mentioned, among others. Nevertheless, there are countries which try to govern (or at least suggest) the min-max salaries that you can expect given your profession/experience/skill, e.g. Germany.

Like many people replying to the OP, I'd like to see some data that looks at it from different perspectives, tho, instead of just picking a side and arguing for it - "there's a wage-gap" vs "look, there actually isn't".