Jordan Peterson makes the case that in Sweden, where attempts to establish equality have been ongoing for a long time, the inequality is greater than in most other 1st world nations. Because there is so much institutional equality of benefits for instance, Swedish men and women go into the fields that interest them, which opens up an even wider difference between what the sexes.
In other words, when you remove pay, status and benefits differences, people do the kind of work they are interested in.