You increase the limit and notice it works just as well as before. Then you'll increase the limit again, and again, and again... This is called "normalization

You increase the limit and notice it works just as well as before. Then you'll increase the limit again, and again, and again... This is called "normalization of deviance", and it's what caused the destruction of the space shuttle Challenger. There is a large number of great articles about the phenomenon.