Scrip is certainly not limited to the products a company produces. In the states it was lumber and mining companies but the stores offered whatever people needed.
This is kind of the worst part- that they lack the historical literacy to recognize that they wouldn't even be the first. And they'll just dive headlong into it.
Ahem. https://en.wikipedia.org/wiki/Dutch_East_Indies
And we all know how well that turned out for the locals.