Monogamous patriarchal societies simply outcompete any other setup which is why they were universal until about 100 years ago.

Not quite. Avuncular societies dominated in illiterate sparsely populated regions like Polynesia and the less populated parts of the Asian steppe where inbreeding was a severe concern. (Avuncular means the maternal uncle raises the kids) Also evidence the preliterate Celts and Latins were that way until the Etruscans influenced them and taught them record keeping. Vestiges existed in ancient Rome even after they adopted paterfamilias, which is why avuncle was still word.(Note that Roman Emperors were more likely to inherit the title from their maternal uncle than their father)