Sushe,
I don’t really know whether the disparity in numbers is a historical anomaly or an old problem (although medical advances might very well have allowed a population growth not seen since Mitzrayim), and I’m not sure what impact that has on a possible solution.
If the implication of your observations is that we should therefore allow this problem to continue, because it’s Hashem’s will that many women never marry, that would be a radical hashkafa which our gedolim have obviously not embraced.