If nobody wants to buy those businesses, what does that tell you about them and the professional investors who chose to own hundreds of billions of dollars of their equity?
What does it tell you about the executives who chose to buy back shares rather than paying down debt?
What does it tell you about the idea that cash and other liquid assets on the balance sheet are detrimental to a company's value because of their impact on fundamental ratios?
I dispute your assertion, though. Boeing will be Boeing no matter what. GE will be GE no matter what. They build technology that would have been viewed as miraculous not too long ago.
Southwest Airlines, on the other hand, is just a bus company.