We all know the truth about why younger women go with older men, and it ain't looks.
No, it's not. Because that's generally not the thing that women most strongly select for in a partner. They want other things (and of course, looks would be nice too), and those other things are more common in older men than younger men. And the men who have those things young? They are, not surprisingly, the most desired of all men. If you're 25 years old, rich, powerful, good looking.. Guess what? You're gonna get even more chances with 25 year old women than a 45 year old guy who's rich, powerful and good looking. It's just that there are a lot more rich/powerful 45 year old men than 25.
What do older men have that younger ones don't?
Money and power. And if he was really so stupid that he thought she was with him for his looks, well, I'm glad you set him straight. It would be like a crazy hot 25 year old woman dating a 45 year old man and telling her friends "He loves me because of wit (with an IQ of 80)" or "He loves me because my job is so cool" (working at Starbucks). No, hunny, he loves you because you're beautiful, accept it, decide if it's what you want, and move on. Just like the 50 year old guy with a Ferrari in the driveway and a 22 year old GF, she loves you because of your things, not because you're the next "David" statue.
None of this is even a little bit, or shouldn't be, shocking. If your a woman having trouble dating, the advice you'll get (and I'd say is often correct) is to work at your physical attractiveness, lose weight, better clothes, makeup, etc. If you're a guy in that same situation, the suggestions will be about improving your status (get a better job), increasing your ability to generate desire (game/talking to women/etc), and projecting power/dominance. And, in general, a man getting a job paying 3X as much as his old one is going to open a lot more doors for dating than losing 30 lbs, and, of course, the reverse if true for a woman. Don't like it? Well, neither do it, but, I'm pretty sure we all kind of know this is how the "market" works.
The exchange of money and beauty? But why the blind spot from so many men?
I'm not sure it's a "blind spot", I think most men who are really wealthy know about "gold diggers" and know that women are interested in them for money. I think it's more a "don't care" than "don't know". If your a man making this deal, you're still sleeping with some hot young thing, who, at least in most cases, is doing a good imitation of enjoying it. You've got enough money for the things you want, so, at some point, the incremental improvement in your life that can be purchased outright with money comes to an end. And then, in some ways, why not use that money to woo women "out of your league"? It seems pretty darn universal that men do this, from trophy wives on one end of the spectrum to prostitutes on the other end. Men clearly have a willingness and desire to exchange money for sex with attractive women, so much so that to curtail that drive, the direct exchange of money for sex is actually illegal in many places.