This makes no sense, given the remainder of the article, as a modern, well-functioning economy (of which Somalia certainly does not have one) requires diversity. Xeer relies heavily on ingrained cultural norms, and is discriminatory against minorities and women. Lack of impartiality is also a question, given that you are assigned a judge at birth.
It might work well in Somalia, but I can't see what is described as being translatable elsewhere. There are some elements that aren't Xeer-specific (like reducing focus on punitive measures), but as a whole, I can't see it working somewhere else that doesn't have the same social structure.