of course but these older men are going to get younger women if they offer a lot more monetary compensation for their age... no young grl's gonna marry a poor old man. but a young woman may marry a poor young man.
Even a lesser earning but with stable job older man can find a younger girl relatively easily.
Older women on the other hand, with all the money will have difficulty in finding younger men. Exception to this does occur but not so commonly. I am speaking of long term usual marriages. Not celebrity kind of marriages etc.
And depending upon where you are, even poor old men do get married with much younger girls. Reverse is uncommon.
Lets face it still men rule the relationship world with their terms.