I work for a large company in the automotive space. I can say that most of the accidental complexity I see is related to shoe horning solutions into technologies that we happen to have licenses for as opposed to what is the simplest and most robust solution.

The kind of over-engineering for the CV polishing almost always comes from our college hires. It's not really their fault, as I understand the attraction to the shiniest object when your a newb. When their monstrosities are allowed to make it into production, however, is when you have a dev manager that doesn't really understand software engineering.

For my part, I used to scream from the mountain tops that we were over-engineering everything, but now I just let them fuck shit up cause I'm tired of trying to save people from themselves.