Not saying your wrong, but I just read "Sapiens" by Yuval Noah Harari, and my take away was that there were plenty of matriarchal tribes before agriculture and industry. And, generally it's not an unusual thing for primates. He even goes into a lot of detail on why things changed within the last 12,000 years.

No offense, but I'd rather trust that guy's story than some random dude on the internet's.