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But is a low-margin business really the one where you want to bootstrap your robotics industry?

It stops being low-margin if suddenly you can build things much cheaper than your competitors can, and they can't replicate what you're doing.

Yes, but a lot of experience is required in robotics to reach that stage.

Maybe the insight is that it is better to first sell the robots (the "shovels") and only later go into the gold business yourself (if ever).