I think the problem is that often the solutions are worse than the problem... price controls, wage ceilings, protectionism, etc. As opposed to offering negotiation training to women to push for the highest wages you can achieve.
I've worked pretty hard to teach my daughter than it doesn't hurt to ask for more than offered, or even to price yourself out of a job if there are multiple opportunities on the table. Women tend to naturally optimize for stability over maximum income and other factors and to accept a given deal vs negotiate. Much like men are far more likely to move to another location for career advancement and higher pay. There are natural tendencies that training can overcome which is likely better than trying to price control.
I've worked pretty hard to teach my daughter than it doesn't hurt to ask for more than offered, or even to price yourself out of a job if there are multiple opportunities on the table. Women tend to naturally optimize for stability over maximum income and other factors and to accept a given deal vs negotiate. Much like men are far more likely to move to another location for career advancement and higher pay. There are natural tendencies that training can overcome which is likely better than trying to price control.