If you're wondering how things are going with the famous DRM'd Polish trains, well, their manufacturer – #Newag – sued the hackers who had un-blocked them:
https://rys.io/en/175.html
But weirdly, after months of implying and suggesting that the locking code was added to the software by the hackers themselves, in the lawsuit the company now insists they did not in fact modify the software installed on the trains.
Why? Because that would not mesh well with the copyright infringement claim. 🤡
@rysiek I was in a carriage full of students, I think it's safe to say they tricked me.
@sullybiker how thoughtful of them! 
@sullybiker that is known to happen, yes.