For example if socialization was such a critical decider, why are some many women maids or professional housekeepers? Most people in this career don't get much on-the-job socialization. Or what about accounting and book keeping; which is a professional, white collar career that also happens to employ more women than men?
While socialization may be a part of the equation, there's a lot more going on here and simply blaming women for being "too social" just panders to common stereotypes.