The same thing happened to Indianapolis when United Airlines filed for bankrupcy..[Indy built them a Premier Maint. Facility].I'd call it being extremely naive and a lack of strategic business experience to agree to absorb the entire cost themselves.
PIT has no one to blame but themselves for their $600M debt.
The problem is that the Bankrupcy Rules for Big Corporations are Crooked as a Dogs Hind Leg...These Corporations should not be allowed to walk away from their Commitments !, Be it City Governments, [in this case], creditors OR employees...