I think it comes down to money and power. A lot of people are willing to not have morals for money. I'm sure a few women were willing to do some extra activity for promotion. I think these people in power forget that not every woman is willing to do that to gain success. People have so much power that they approach the situation as a foregone conclusion that they can do what they want to who they want whenever they want to.
I don't think it's as simple as compliments on shoes or a nice dress. I don't think all these things are happening because a guy said you look attractive one time. In the current climate I believe some women might be taking advantage of the situation but I also believe there were probably a few men in powerfull positions who took things to far and made some people feel uncomfortable.
I hit on a girl I worked with once. I got rejected. The reason she didn't have to go and complain was I got the message. I didn't pursue her after that even if she said we could be friends. I wasn't staring at her at work or finding ways to be around her.
There are avenues in this world to get what you need without the trouble. I can agree there is a lot of grey area with victims on both sides of this.