Unfortunately that is why fall guys were invented. I never liked the idea of punishing a company based on their revenue, but in this kind of case that is the only way to get the actual owners of the company to listen and punish the people actually responsible.
I don't believe the Polish judicial systems has experience in dealing with corporate crime, especially of the tech-related kind. I'm a bit afraid of disappointment here.
The country does I'm sure but my guess would be that the judiciary probably doesn't because the judicial tools to deal with are quite likely absent or quite recently enacted and because there have been few prosecutions.
No, we do not have. Sabotage is rare to nonexisting and cases in past were rare and of "teenager builds device to control switch on tram tracks, derails tram for fun" type.