It's not just about money, though that's one factor people often cite. It's a lot more complicated than that - I know a lot of average looking men with above-average looking romantic companions, and many of them aren't wealthy. That's a factor, but that's not it, in itself.
As for duds, I think a person who puts little effort into cultivating an interesting personality and lifestyle is a dud. Men and women. A dud is a dud. They get rejected. That's a good thing.
I see what you're saying, but a person who makes no sincere attempt at finding quality members of the opposite sex for courtship, and then laments that there are no good people out there for them, are just not doing their part. I feel sorry for them only in the respect that they can change easily, but for whatever reason just don't do it.
No money isn't the only factor... but its a big one. Like I said.. I'm not a bad looking guy and pretty outgoing guy, never had a problem meeting women... but even I have seen the difference in women around me when they found out my net worth/income.. a fact that I go out of my way to generally keep discreet.. its not Donald Trumpish huge, but its well above the median.
I will agree with the fact an attractive woman will date a man of a lesser attractive level than attractive man to date a lesser attractive women in the general case. And yes there are more complex issues that come to play for it, but there is absolutely no doubt that money is the biggest of them... Others might be, he was there for her when she needed him.. he was just truly a nice guy after her dating many self absorbed jerks.... etc etc.. but the most consistent when you see a guy thats with a woman WAY above his scale is the greenback.
Another old axiom... Women love you for one reason and one reason only, its in your pants and size matters... its called your wallet.