This article (and the concept of “business war games”) brought me back to one of the first computer games I ever played: Lemonade Stand on the Apple II.[1]

Sounds like Lemonade Stand was a simplified version of some of these games from the 50s.

40 years ago and I still remember the optimum price to charge for a drink ($0.11).

[1] https://en.m.wikipedia.org/wiki/Lemonade_Stand