A rather interesting/insightful comment from the article: http://bbs.boingboing.net/t/high-end-cnc-machines-cant-be-mo...
What does the fact they don't install them on US machines have to do with them not using it as a business opportunity? This is a non-sequitur.
Since this guy hasn't heard of them being used to enforce finance deals means absolutely nothing, how could anyone cancel out a point because of that?
And his third point skips out on the fact that adding this functionality to the machine can cause extra problems.