I don't know about the one mentioned, but I've used very high end CNCs. The ones that I used are VERY carefully calibrated by the manufacturer on site. A slight change in the slope of the floor could throw the calibration off. They wouldn't want to spend time troubleshooting a problem caused by somebody moving the equipment. That said, we didn't have anything like a GPS on the thing that would shut it down if moved.
Then better implement something like the "tainted mode" in the Linux kernel: if you load a closed-source (tainted) module, you can continue to use it, but the vendor (in this case the kernel developers) will refuse to give support.
