Anecdotally, I'm in the process of being sexually harassed by a director at the company I work for and choosing not reporting it. I plan to leave in a couple of months, my startup is in the final stages of closing a seed round - getting in to a sexual harassment lawsuit right now is the last thing I need in terms of stress and career.
The power dynamics are significantly different though, I don't feel at all in danger, I'm a 6'2 man who lifts weights in his spare time, so it's more of an annoyance than anything truly worrying. I understand that this person may go on to harass the next person who fills my role, but I simply have too much personally riding on the outcome of the present to leverage it in that way.
> more of an annoyance than anything truly worrying
I'd certainly be pretty worried if someone in a position of power over me was doing anything of the sort. Even if you don't have to worry about the individual literally overpowering you (Which in itself would be a tough thing to prove you were not the aggressor if you are a muscular 6+ footer and had to push off an aggressive advance)
that isn't a historical problem the way it is for women
Any feminist will remind you that sexual harassment isn't about sex, it's about power. With more women in positions of power these days expect the number of harassment cases where men are the target to rise.
As an exercise, ask a few men and women you know if they've ever been harassed or attacked at work. If they didn't report it, ask them why.