The reason women dont get to the top is because men deliberately stop them getting there. There is no other reason.
It is striking that Shery Sandberg appears not to have talked at all about the role that men play in the lack of promotion of women. I have not read her book so I apologise if she has said something but from what I have read elsewhere there appears to be little mention of men and their role.
Surely men are in power now and it is men who must begin to promote more women? I have not seen her challenge men in top jobs to step up to the plate on this issue. Why is she only talking about what women need to do - what about the men in power?
I once worked in a firm where the man who was Head of Dept systematically destroyed the career of every woman who reported to him. I was very junior but knew enough that he deliberately cut the bonuses, refused to promote, and eventually got rid of every single woman manager. He never recruited any women.
It was so blatant. Every single one of those women through no fault at all had their career damaged. They were all extremely good at their jobs. I worked for most of them on teams and they were much much better than the two male managers who I mainly worked for. Those two male managers also held very similar views about women as the Head of Dept. He naturally promoted them above all the female managers.
I do wonder over the years how many women have had their careers damaged and destroyed by those three men.
Most women don't realise how much the odds are stacked against them. They blame themselves or think they just have to try harder. If you came up against the three men I reported to in that firm you would have no chance. No matter how good you were or how hard you worked.
Believe me it is nothing to do with women being unwilling to 'lean in', or having babies or not asking for promotion and pay rises or being too assertive or not assertive enough or any of the other reasons that are cited. There is always a reason given as to why women dont get to the top. It is never true.
It is always a man in power that stops an ambitious, competent well qualified women from getting to the top.