Arguably that particular situation was more a symptom of bringing a paramour to where spouses would be present, demonstrating disrespect for his clients relationships (and in turn his clients). That was the tell.
People generally don't cheat their in-groups, and these vice collateral rituals establish in-group status. Showing disrespect to the values of a group is a good indicator your perceived cost of defection is low. Signalling you don't value your collateral is a good way to put off counterparties.
The guy showing up with a mistress showed not that he was necessarily immoral, but rather, that he didn't value the esteem of his clients or vice collateral he had established.
In my own experience, people who have dubious morals are not good for business.
>People generally don't cheat their in-groups
Perhaps "less likely". My own experience is that people who try to bend the rules are less intelligent, and less likely to be successful. This seems to be backed up by research:
People generally don't cheat their in-groups, and these vice collateral rituals establish in-group status. Showing disrespect to the values of a group is a good indicator your perceived cost of defection is low. Signalling you don't value your collateral is a good way to put off counterparties.
The guy showing up with a mistress showed not that he was necessarily immoral, but rather, that he didn't value the esteem of his clients or vice collateral he had established.