> I have seen precisely zero consequences for these people because they usually leave after not too long and go somewhere else

In my case, it's worse than that. They usually get promotions, raises and move up the ladder. The business only cares about thing: making cash. This means pumping out feature as soon as possible because the sales team closed a million dollar contract, which includes features we don't have.

The engineers who deliver the features are noticed by managers and win big. No one cares about code quality and half the time, the code is rewritten or thrown away anyway..

I'm sure there exists organization where code is treated as art, but I sure as heck haven't worked in one. Over the years, I've given up trying to cleanup crap code, now I just get the work done as best as I can and call it a day.