[daxfohl]

+1 for "My wife and I are a team"

OP absolutely needs to have this discussion with his partner ... if they don't see eye to eye on what their goals are, then it puts the family at risk.

Also +1 for noting survivor bias.

In the talk with his partner, they need to confront head-on the issue that the whole entrepreneurship thing may not work out. Or worse, may be "on the verge of success" for year after year after year. Decide up front where to draw lines and what plan B might be.