Re bankruptcy, it's not the case that airlines get a free pass. Any business can file Chapter 11, and it is expensive, not a joy ride. Bankruptcy law is necessary in order to provide an organized process to liquidation (Chapter 7), or to avoid having to go Chapter 7 (Chapter 11 or 13). Chapter 11 is a win-win situation, where creditors may get something and the business gets a second chance at life.