What makes a fat, sweaty, middle aged man think that beautiful young girl is just gagging to have sex with him?
There's a certain mentally that can develop with these powerful men.
A famous man like PA has plenty of fangirls and women who did - and probably still do, all this aside - want to sleep with him. Gorgeous hot women. He's PA and as a pp mentioned, when he was nearer 40 he was a very decent looking eligible divorced bachelor.
I hate saying it, but you hear about famous men - some frankly couldn't pull without a rope if they were not famous because they are not lookers in any universe (think Melania and Trump) - and many women do go for them. That some of these women may have issues with themselves is neither here or there to these men. It serves to inflate their puffed up self image. There are pics of PA dancing with very attractive women.
The actor Jamie foxx said he found it shocking that before he was famous he'd be in a club struggling to get women to notice him. But when he became famous he'd walk into the same club and women who would never be interested previously would pursue him. He seemed to find it sobering rather than a great perk of success.
I think that sort of unrealistic pulling power can get to some mens heads. So that they really can believe 'this woman is desperate to sleep with me'. Even lucky. That is every woman except the ones they don't want to sleep with, in which case poor them missing out from the magic penis. The 'positive act' response bears out some of this attitude.
The more sinister side is that the 'thrill of the sexual chase' has gone and it's no longer a challenge, but some fresh, forbidden, somewhat naive fruit is still a challenge...
Too much hedonism and too much power and too many sychophants telling you yes all the time.