Modern feminists describe this as a change in ownership. They tell us:

Women's bodies went from being the possession of one man to the possession of all men.

They describe it this way, because they recognize now what they didn't foresee at the time. Sex had always been used as a tool 'make men commit'. The availability of free sex meant that men didn't feel the need to commit. Many women felt their power over their men waning.

More significantly, men tend to prefer young women over their older brethren, so it gave the sexual power to the young women, not the older women who presumably felt more deserving (having begun the movement). So their power dwindled to almost nothing as they aged.

Their frustrations are still being expressed in their feminist literature.