As an engineer myself working for them 20 years ago, we were certainly not well paid like the article said. Quite the contrary: I was still on University(had not finished the final project) and had to do most of the hard technical work myself for someone else to just overview the results and sign. My salary was miserable.
Once I had finished I could earn 3 to 4 times more on several places.
They were also extremely creative taking foreign systems, studying the patent and modifying it to pay zero to the creators of the patents. This was done with things like the aluminium beams for electricity delivery that I think was developed by Italians, or the tunnelling machines that had all the pieces replicated inhouse.
Once I had finished I could earn 3 to 4 times more on several places.
They were also extremely creative taking foreign systems, studying the patent and modifying it to pay zero to the creators of the patents. This was done with things like the aluminium beams for electricity delivery that I think was developed by Italians, or the tunnelling machines that had all the pieces replicated inhouse.