I agree. The basics are not difficult and it’s a game with either simple or more complex rules, depending on how you want to play.
You can play with “play money” too.
Roblox is a kids game that has a trading system that is similar to the stock market, and many other games kids play have economies at varying levels of complexity, including various markets.
Skills, once learned, are transferable to different domains. It’s not always simple at first, as one has to learn a new language to describe things you already know but don’t know that you know.
But once you start to see correlations, it gets easy.