One of note: the "criminals" in this context are, at best, homebrew developers and users who'd like to unlock the full potential of the hardware they bought. At worst, they're "pirates" (the industry term, not mine) and game cheats. Nobody likes a cheater in a video game, but I don't know if I'd go as far as to make ethical prescriptions about it.
Sony feels comfortable paying a pittance for these vulnerabilities because the market for them is relatively soft. But that doesn't mean that the underlying asset actually lacks value; it means that Sony has successfully criminalized applications of the asset, artificially lowering their salability.