Family skills can be valued by many people, but they are visible and impactful mainly within the family. As a result, a partner with a public career has more personal options. They can find new jobs, negotiate their schedule, and invest in themselves to have a secure source of income in case of disaster. Thus can work wonderfully for equal partners who share the opportunity together, but it can create a power imbalance when things - any of a wide variety of things - go wrong.