One sad thing throughout history is that creators, inventors and really anyone not in the upperclass, got stepped on repeatedly for their creations and robbed of their success and contribution. Many times the copycat is the one that gets all the praise.

This bit was interesting:

She created two sets of rules for her game: an anti-monopolist set in which all were rewarded when wealth was created, and a monopolist set in which the goal was to create monopolies and crush opponents. Her dualistic approach was a teaching tool meant to demonstrate that the first set of rules was morally superior.

And yet it was the monopolist version of the game that caught on

Another general sad thing, sometimes the bad version you send to the client/customer is the one they like, apparently also baked into history.