I have nothing but praise for J. K. Rowling. Her contribution - apart from the books themselves, obviously - is showing writers how to interact with the 21st Century.
As a past president of the Writers Guild, I think women shouldn't write for free. Maybe you have to do it for a time, to make a reputation, but I think the idea of giving your work away is the beginning of authors not being able to make a living.
My literary heroes were mostly women writers and thinkers - Joy Williams, Joan Didion, Anne Sexton, June Jordan, Sarah Schulman, Audre Lorde, Cherrie Moraga, Christa Wolf - and much of this writing was political as well as literary.