It's the way their model is set up. As others have pointed out, they don't fly hub-and-spoke. So when they get planes stranded somewhere, it screws up the ent

It's the way their model is set up. As others have pointed out, they don't fly hub-and-spoke. So when they get planes stranded somewhere, it screws up the entire system and all the planes and all the crew end up at the wrong airports, and it's extremely difficult to get everything back to where it's supposed to be. They almost have to literally shut down the airline and start it up again, which is what you are seeing now.