Oh please, there’s a perfectly good reason (among others) why men don’t care care of small children – statistically speaking the overwhelming majority child molesters are men. Obviously that’s not to say all men are molesters or even that the majority of men interested in caring for small children are, however better safe than sorry. I wouldn’t feel comfortable with a strange man changing my small children’s diapers and even though I may be over on dan adam l’chaf zchut, I’d raise an eyebrow at any guy who would want to do that for a living.
In the business world, there are many negotiating and sales situations where a man commands more respect and authority than a woman just by virtue of his gender. I’m not saying that’s right, but I’m also not saying it’s necessarily always wrong – liberal non-profits seem to be fine with social experiments but when you want to make money often you can’t buck long held rules of human nature and society. Obviously there are exceptions but that’s the general way of things.