[PaulHoule]

I'd say the problem isn't DRY (People duplicate code way too much. The "rule of three" is too conservative. I am looking at an if-then-else ladder right now that is 250 lines that could easily be 25) but rather a high prevalence of "snake oil" in the industry that discredits any effort to improve things.

For instance there is the split between Microsoft and Open Source where people mutually think the others are idiots. (It used to be evenly split, now it is definitely one sided)

There is the anti-OOP hype train and the associated "functional programming" hype train. (I've met so many programmers who travel from job to job like an itinerant martial artist looking for some productive workplace that uses FP and became miserable in the process.)

Programmers have grown thick earflaps and it is not at all unusual to talk to an engineering manager who says "we write tests first", "we implement error handling with monads", and "we do code reviews" but when you get into the code base you find there are very few tests, errors get ignored silently, and obviously they can't be doing code reviews because otherwise the engineering manager would know the first two are the case.

The problem is not that OOP is bad or FP is bad or any particular practice is good or bad but that programmers have become intensely cynical and any effort to promote "best practices" of any kind runs headlong against resistance, "normalization of deviance" and production pressures.