That said, I agree with the author that it's weird how little social engineering people put into their games. I refuse to play monopoly or Risk if the house rules prohibit entering complicated agreements with other players like forward contracts, lease-to-purchase agreements, variable-interest rate loans, swaps, and what have you.
I still haven't gotten anyone to play with me under free banking rules where everyone is free to print their own currency, but I'm really excited about the idea.