Not everybody can do everything at a high level.
Believe it or not, one teacher used to call me a giant spastic for not being able to play football.
We all have different competencies. Some of us are intellectually gifted, some of us athletically gifted, some of us are great listeners. Everyone has a different level of what they can do.
I think it would be folly to expect that women will ever dominate or even approach equal representation in a large number of areas simply because their aptitudes, abilities and interests are different for physiological reasons.
The Ledbetter Act is aimed at equality. But individuals are not equal. We all have different talents, resources, interests, abilities, educations, and backgrounds.
There are people who are good for letters and others that are good for numbers.