>The train manufacturer, Newag, also competed in the tender to carry out the maintenance, but the manufacturer’s bid was about 750k USD higher and the tender was eventually won by SPS, which offered to carry out the maintenance of 11 trains for around 5.5 mln USD.
Just thinking outloud. But if you made it so your competitor couldn't fulfill their servicing contract, then the entity taking out the contract might just very well come to you to solve the problem. You might not win the contract on price, but win it by default because you made it impossible for anyone else to complete it.
That is until your scheme is uncovered because you left the GPS coordinates of your competitors workshops in your code.
More sanely (not to be confused with likely!) the courts will decide that since this is something only the OEM can do, it must done at no charge as part of normal warranty work.