They was both A) a case decided before the DMCA was law, and B) the DRM system of the PS1 is pretty much solely focused on legitimate PS1s only playing legitima

They was both A) a case decided before the DMCA was law, and B) the DRM system of the PS1 is pretty much solely focused on legitimate PS1s only playing legitimate discs; there's nothing in most games stopping other systems from reading everything off the disc freely in cleartext.