Not because I have any on going business with family members but because of what I have seen and stories I have heard, to an extent one or two things I can relate with but do you think it is also true that they're the worst set of people to have a business with. Some have also said that, no one should have anyone like family members who they can not arrest to be in charge of their business.
The empathy involved when doing business with family members can undermine the business. Business is not meant to be run by sympathy, empathy, and forgiveness. For a business to be successful, discipline, dedication, accountability, and responsibility have to be very clear to everyone involved.
Recently, I gave a family member some money to co-operate in a fashion business with me. To date, I'm yet to hear from him. One of the greatest challenges in the business I did with him is that I allowed emotions to cloud my judgement. The terms and agreement favored him, not me. Something I'll never try again.