Rich people aren't usually successful in relationships. Relationships need time, just as businesses and you either give your time or to another, doing half of something is not for a businessman.
There must be a point of equilibrium between business and love, but it's not on 50% for sure. I think it's somewhere 80% of the time business and 20% love. It's not 20% of the sex, of course, just spending time with the loved ones. Most of the time, businessmen don't know about this ratio, they give most of their time to the business because love isn't profitable. I think a piece of more useful information you'll find on https://brilic.com/en/blog/107.