Actual capitalism is thin on the ground. We have democratic and undemocratic socialism, democratic and undemocratic fascism, and miscellaneous varieties of corrupt cronyism. But to the extent that capitalism currently exists, it’s not free-market capitalism but chained-market capitalism, weighted down with laws and regulations – and then criticized for its inability to function efficiently.
Of course, even if capitalism hadn’t been chained down, we still might not see lunar resources being exploited. Not because of “market failure” but because of the market correctly deciding that it would currently cost more than it’s worth. There’s an old quote I wish I could find the source for. It applied to “market failure” regarding insurance for flood or hurricane damage but the same principle might apply here. “That isn’t ‘market failure’ – that’s the market working. That’s the market saying ‘Don’t build there! Are you crazy?'”
– Samizdata commenter ‘Deep Lurker’