This experience is eerily similar to the failure of a business of a family member. People who have built their business over decades will go to irrational lengths to save it, even when it would be prudent to wind it up and preserve your existing wealth, and mental and physical well-being. When traditional creditors refuse to lend more, I have seen homes getting mortgaged, willingness to take on high-interest loans from dubious people and a belief that things can be fixed if they can just have a little more money and time.
I think the attachment, and subsequent grief from failure, with business built over years and decades with little outside capital is significantly more than venture-backed businesses where entrepreneurs can generally share the fruits and failure with other investors/backers.