Of course there are always ways to improve, but when duplication reaches a certain level, people just stop changing things because they can't keep up with the b

Of course there are always ways to improve, but when duplication reaches a certain level, people just stop changing things because they can't keep up with the bugs it produces or the changes it forces all over the place. Anything can be fixed with enough effort, but there's a point at which it's no longer justifiable in terms of dollars to undergo that effort.