Airlines should make money the way they are booked

I have to say that if airlines do not make money they have a broken model that can not be fixed. I am flying on American on regular basis and the flight are so booked that I feel like a sardin. Today the flight to Brussels from Chicago is so full that American has to give 800 dollars for somebody to get off the plane. Same thing with my flight from Dallas to Chicago. Completely booked.....

So my point is that it is not only the gas that is the reason these companies are loosing money. It is also something in their operational model....