Rape is generally understood as less a sexual act than a dominance move. Non-rapists assume that all rapists are just possessed of some kind of unbridled libido but that doesn’t explain raping sexually immature children, animals, etc. Rather it is the ultimate act of control and dominance.
That is why the more there’s an economic or age difference between two people, even a consensual relationship begins to be a red flag because of the inherent power imbalance, which then extends more influence or even control to the older of the two persons (usually the man), even with initially the best of intentions. In an intimate relationship IMO it’s better if both persons can “hold their own”. That doesn’t automatically make, say, a May/December romance evil – there are always counterexamples. But they tend to be exceptions that prove the point.
As to why these things seem to happen more among the wealthy and famous, it’s a combination of confirmation bias (they are in the news, we are not) and having more money than sense (or accountability) and being part of the two-tier justice system that works differently for the wealthy.