It does not happen everywhere. It happens in companies lacking sufficient years of experience building software, without good management. It's so common as to

It does not happen everywhere. It happens in companies lacking sufficient years of experience building software, without good management. It's so common as to be almost universal in engineers with less than 5 years of experience to encounter some important piece of software that they think is ugly and poorly written and embark on a massive rewrite that they think will fix all the problems.