If the expectation of sex, female attention, women looking and acting in an agreeable way (male entitlement) didn’t exist. Women wouldn’t have to decide whether or not they were, ‘happy with it’.
Sex being exchanged for career opportunities is coercion. Is exploitation. Is an abuse of power.
If it’s the case that the career doesn’t happen unless the sex does, what does that tell us about the power dynamic between the person seeking work/a career and the person who has the work/career to give.
If a person is coerced into a sexual act when they wouldn’t usually have chosen to engage in that way, then they have been raped or assaulted.
The myriad ways that victims choose to tell it to themselves has no bearing on that. So no, it isn’t true that some women are ‘happy to sleep their way to success’ or whatever it was.