I can't tell if you are serious or not but... Nothing happens in a vacuum. Would he have had the time or opportunity to work on side projects without his wife handling some aspect of their domestic situation, for example? But the bigger picture is that a married couple is a single entity legally speaking as far as property and finances are concerned. Judges in many jurisdictions completely ignore pre-nups for this very reason.
Was serious. Thanks for the response. My parents always kept separate bank accounts, always seemed to have clearly defined separations between who
owned what. Separate cars, separate car payments. Separate careers, separate everything. I always got the sense that my parents were two separate individuals in a partnership. I don't think either of them would have a problem signing a postnup solidifying that.
There are quite a few countries where it's A-OK to give your entire salary to your wife, so it's more like not paying her your salary, but her giving you a fraction of yours.