I don't know why y'all are looking for psychological reasons why men don't "make" women dress more modestly. Brainwashed, spineless, mush etc... Are we talking about trad men or worldy men?
Trad men might be spineless if they know better but do not correct their wives and daughters. That I can see and it's often true.
But worldy men ruled by their passions actually like immodest dress. They aren't fighting their passions and trying to overcome them like the men contributing here so it's no skin off their backs. They love immodest dress and encourage it wholeheartedly. There's no psychobabble necessary on that one, it's pretty cut and dry. Cleavage? Yes please. And immoral women will correspond.
We're talking men in general across all cultures and worldviews.
Sometimes I think that trads, male and female, have this misconception that Traditional Catholicism is the only setting for true modesty and high morality.
This couldn't be more wrong. You can check around the globe and outside of maybe primitive Africa and parts of Asia women were held accountable for their appearance, modesty, humility and general respect for the social mores of their respective cultures. There are plenty of non-Catholic men, heck non-Christian men that hold their women to a certain standard of respect and modesty in their dress and the way they carry themselves.
It is more here in the Judaic, counter-culture, pornography addicted "christian" West that women have run amok dressing and acting like two-bit whores.
Most other cultures do not and will not put up with this feminizing, liberation BS.
And their not afraid to tell the women as such.