Damn that's rough haha.
Reminds me a little of TMNT3 on NES that had an anti-piracy protection thing that checked if the Konami logo was missing from the title screen, which would usually be the case with a pirate copy. If it was missing, the enemies took many more hits to kill and dealt more damage. And Shredder was unbeatable.
Nowadays I think anti-piracy checks that are blatant are much more effective than ones that ruin the game. Let them know they're playing a pirated copy and shame the player significantly.
Game Dev Tycoon's developers might have not made their obvious enough, it seems.