Monopoly is a business game, it's a numbers and decisions thing. It simulates how people use money and the random things that might happen every day in the business world.
In the beginning, somebody interested in permaculture will have to invest in it, with effort, time, and resources, often including money. Learning can be expensive. It's often better to spend money to listen to an expert's experience, than to invest a lot of time and effort repeating their mistakes.
And no matter how many tutorials you watch, you will have to make your own mistakes. =D We learn by doing. =D
We sell surplus produce, we offer tours and seminars, we do what we need to do to pay our taxes.
So yes, maybe you can put the business side of permaculture into a game board, maybe put in a few tokens that represent other resources like food and knowledge (think tech tree). Hint: if you've played Sid Meier's computer game Civilization, it looks a lot like a game board. A VERY COMPLICATED game board.
But you can't learn to run a business by playing monopoly. It's very hard to capture the feeling you get when you succeed in making something grow for the first time. The things we're trying to achieve, like saving the planet from armageddon by pollution, you can put into numbers via carbon taxes or carbon footprint or something. Almost everything can be put into numbers. Except emotions. Maybe emotions can be put into cards, like a get out of jail free card. Like "breathing the fresh air, and knowing you had something to do with it"
I know every one of us has different ideas, and we might end up producing as many kinds of games as there are people in this discussion. So follow your heart =D. And MAY THE FORCE BE WITH YOU =D