A majority of super successful men (and almost as many women) have a difficult time maintaining fidelity or simply sticking to a long term marriage. True -- but that's what makes them "attractive" in the first place. They are the high status male, sought after by all. It is very competitive.
Had he been less high status, he would have less opportunities to "cheat", but he'd also be less attractive in the mental calculus of women.
Women are naturally drawn to the men who are most difficult to hold on to.
Yes.
But aggressive competitive men are likewise more likely to cheat in the firstplace. It's a complimentary situation.
Competitiveness and drive in business often transfers to sexual conquests as well.
And you are correct, men withy more money have more "options".
It takes a lot of character for a driven ambitious man to honour his wife as he should.