The absence of male interest in modern female writers may be far more simply explained than analyzing plot, narrative, or genre.
It may be that contemporary female writers have been schooled in feminist women's studies (navel-gazing) departments, and have elected to write "in a different voice," (thanks Carol Gilligan for another useless concept..), and they simply have no universal (as in --- relating directly to all humankind) ideas.
If female literature has become an intellectual ghetto, one need look no further than the foundation for all thought .... philosophy.
A quick Google search on "famous female philosophers" produced the following "Top" titles from amazon.com --
(All 2320 results for Women in Philosophy) -- ranked by sales ---
The Hip Chick's Guide to Macrobiotics: A Philosophy for Achieving a Radiant Mind and a Fabulous Body
by Jessica Porter
Gender Basics: Feminist Perspectives on Women and Men
by Anne Minas
The Multi-Orgasmic Woman : Discover Your Full Desire, Pleasure, and Vitality
by Mantak Chia,
Women and Human Development
by Martha C. Nussbaum
Women's Lives, Women's Legacies: Passing Your Beliefs and Blessings to Future Generations: Creating Your Own Spiritual-Ethical Will
by Rachael Freed
Loose Women, Lecherous Men: A Feminist Philosophy of Sex
by Linda Lemoncheck
Do the search yourself, and look for any evidence that women writers understand anything other than gender-restricted thought. (i.e. - NON-THOUGHT.)
No Aristotle, Plato, Socrates, Hume, Kant, Russell, Dewey, Locke, Jefferson ... anywhere to be found.
"Female philosophy!"
Gosh, an entire liberated gender missed the whole point!
"It's not just about MEEEEEEEEEEEEEEE..."
Well, the literature in the check-out lines at WalMart suggests otherwise...
The latest is something about "the philosophy of Desperate Housewives..."