The phenomenon cannot be more obvious when viewed at state levels in India. The Gujarati and Marwadi communities are far more enterprising than others in India. This is while the federal rules that all communities live under remain the same.
Anecdotally, the cause for this seems to neatly fall out of my conversations with friends from these communities.
There is cultural weight to being a person who doesn't work for someone else. There is cultural pride in ownership that does not exist in most others.
On the other hand, Maharashtrians seem to value being able to separate work and life. Being able to sleep without worrying about your enterprise and knowing that the same reliable amount will be deposited in your account every month is considered important.
These fundamental differences manifest even when people live under other geographical, political and economical variables.