What gave you that idea? I'm way more happy when its difficult to rob people. I want guards to be allert and pissed off at thieves. Thats when I need elaborate plans to get what I want.

I'm making the argument that a sociopath on this prison island will have an easier time getting rich, but its is totally doable without going viking on the merchants.

Anything beyond that is just you trying to build a strawman of how I like to play Divinity.