I don't think you understand what a sunk cost fallacy means. It means specifically what you were referring to that we should not continue to play them just because we have them on the books. It's like justifying buying a car at $10,000 and having to put in $2,000 into the car every 6 months. But you don't get a new one because you think to yourself. Oh I've already spent that $10,000. in repairs and you just constantly go way past with the value of the car is. It is not mean we need to stick with what we have.