A paycheck and a re-org are pretty rational reasons. Maybe they aren’t the ones that create concise software but they can certainly be the ones taken en masse.

In my experience enterprise devs don't really like what they are having to create either. They feel boxed into it because of all the petty rules that large organisations create.

No, but they often do it out of cargo culting (sometimes by the individual dev, sometimes by the bureaucratic conmittee of ex-enterprise-coders and managers-who-have-read-about-coding that adopted the mandatory coding standards) without any rational reason.

Source: seeing it from the inside.