"The fundamental problem with their Lego trading game (and the original Legotown) is that they assume capitalism involves a fixed amount of resources that can only be traded. In reality, the resources are constantly growing. If it was really a fixed-resource system, it would always end like Monopoly, with one person owning everything, or owning enough to always be in power at the least."

I'm confused. Are you arguing that resources in the "real world" are not finite? So we'll never run out of indium, oil, fresh water, fertile soil, etc? Because if you are, that's a fascinating viewpoint, and almost completely at odds with reality.

"Surely all the wealth creation done by startups is evidence of that."

Maybe, maybe not. A lot of the "wealth" created by startups exists nowhere but on paper.