This is basically my point. If you have a srated goal of getting to 1.00 v 1.00 with that metric and focus on the individuals in the same jobs, then you will never get there. It's a mismatch between policy and intent. Using the goal post analogy, there taking their shots at the sideline without realizing where the goal really is. The posts haven't moved, they just see a mirage in another place.
"...points to a theory that societal norms serve to re-enforce the expectation of taking jobs in lower paying fields on women versus men."
I do disagree a little with this part. I know that might be true in some cases, but I think a lot of it is by choice too. My wife could have worked at a regular job and made more money, but she likes her flexible hours and her fun job more. In fact, her hourly rate is more than mine, but she just works fewer hours. So she has the opportunity to make more than me, but chooses not to. It makes sense. If I could work less and have less stress, more fun, and the same benefits or living conditions...
I remember a study about African American college grads and aggregate pay being lower than other groups. The analysis showed that the main part of that was because they were choosing jobs based on societal benefit rather than just pay. Things like social workers, teachers, etc. I believe the BLS study showed some of that to be true for the gender wage gap too. Basically, I'm saying that it's not like people are being forced into or away from specific jobs as the main driver.