How simplistic a strawman...and yet, United, the largest (or second largest, depending on whom you ask) is owned by its employees, all union stiffs. They're doing exactly as you demand: "Giving back" on work rules, salary, benefits, etc. And they're teetering on the brink of bankruptcy. How does that figger into your "equation"?
"They cannot manage themselves out of a wet paper sack." That's the root cause. Management, not union, is the problem here (And by your own words, too!)