Pirated games existed almost from the beginning of consoles. I had cloned intelivision and Atari games , clone Gameboy games and so on. Consoles being a closed box have a better chance at eradicating piracyPC has a longer and more pronounced history of pirated games.
And on consoles its non-existent compared to what it used to be (which was never as much as PC).
I believe the ps4 is vunerable to the same webkit hack that the vita is. I don't know if allows for illegal games to be played. I haven't really looked into it