it seems like one would run into the same problem if one were to demand profits or interest. for example, maybe one can run through a simple scenario much like the game you described above.  > you could simply gather your family or friends together to model/simulate the problem empirically, numerically. the requirement is that you buy and sell stuff to each other but always for financial profit. never for less than you paid to procure or make something. and you're not allowed to bring more money in from the outside after starting the game. you'll find that you run out of money for profits in quick order. unless you start issuing yourself credit or scrip, which are forms of fiat currency. change 'profits' to 'interest' and buy and sell to lend and the outcome seems like it would be the same. without adding new money or someone overpaying for stuff (financial losses), you would run out of money to pay interest and those who could not pay would lose whatever property they secured, meaning the lenders would end up with all the property and what money some of the players would be able to pay. example: a bank "lends" (loose use of the term knowing banks create money when they lend) money to someone to buy a house. they pay 15 years of a 30 year mortgage and then get cancer and default. bank gets the house and keeps the 15 years worth of payments. same scenario if they lose their job because their factory moved overseas.
Anarcho-Capitalist