Because Apple and the whole USA IT industry can not build good enough software for industrial automation. I mean, today's software building technology is too primitive.
This is an idiotic post and you have absolutely no idea what you're saying. If you'd like to discuss the situation, email me and we can talk.
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Actually, after thinking about it a little more you may be more accurate than I thought, if I read your statement literally. Thankfully, the US manufacturing industry is building good enough automation software.
