Help me understand something

E.L. James essentially tapped into the fantasies of a lot of women who had read the "Twilight" series. She discovered there was a market for a story about a rich, good looking dom who seduced a virgin into the world of light sadomasochism sex play.

It took off from there.

Men would not understand. This is female pornography. Just like a lot of women don't understand men's fascination with hard core pornography.