Congrats on continuing to miss the point. My point is that the technology is here and continuing to improve, it's really just a matter of affordability and how the machinery fits into the production chain.
Japan has a low birth rate and strict immigration laws, which would easily explain why they are short on labor, which would lead to more reliance on vending machines. If anything, those factors make the market price of labor even higher than the minimum, making machines more affordable. Thanks for making my point for me!