OP, ask yourself: if you invented competition to the traditional banking and monetary system, would you like your identity to be known?
the entity using the satoshi pseudonym is one person. that is established.
Any conclusive investigations regarding if he was indeed a single entity or not?
I do not think Satoshi hid his identity because of this reason. Because there are many people who still want to keep the bitcoin system up and running. And these people do not hide their identities. The current economic system is already based on rivalry.