From what I understand, Hive basically came about because a guy who had control over the platform tried to take control of it for himself and the users didn't like it and took the network for themselves through a hard fork, making today both Steem (network original social) and Hive (hard fork of the old network)
It's hard to understand, there's very little organized content about this fight within the network, most talk only briefly about the subject, so I don't know, and honestly, I don't even know if it's possible to explain all the nuances in detail. What exactly happened?