To be fair, it’s really hard to write maintainable code without support from your org. If your infrastructure does not support automated tests or builds, then you’re in for a treat. If the codebase was written by junior engineers just winging it and then patched up later by more senior people, again it’s gonna be a wild ride. What if the org doesn’t or didn’t even have peer reviews? Even better! What if the code was never even documented or there was never a SDD? I could go on and on because I’ve seen all of it. It all depends on how much money, care, and resources was put into the project originally. Customers and management typically want the best bang for the buck and in the beginning don’t want to be bothered with things like security, high availability, failover, maintainability, or operational costs. They just want to get to the finish line ASAP.