I think a gentleman is someone who holds the comfort of other people above their own. The instinct to do that is inside every good man, I believe. The rules about opening doors and buying dinner and all of that other 'gentleman' stuff is a chess game, especially these days.
Great companies start because the founders want to change the world... not make a fast buck.
Laws are to be enforced justly but firmly, with an iron hand. This is the case anywhere, even in a family.