They're totally automated. They're monitored from a control center somewhere but it's not like there's a driver for each train, there may be one person watching the whole system.
It would be illegal in the US anyway thanks to the FAA.
Actually the new rules do address this. They are required to allow you to do self installs of cable cards now, so at least you won't have to set up a service appointment and have a clueless tech come out to do the install.
Now if you're a TW customer and lucky enough to be in an SDV area you'll also need a Tuning Adapter that will fail every 30 days until you have a couple of service calls for that, but I guess we'll need to wait another 5 years for the next FCC ruling to fix that...
Computer programmers do it byte by byte.