The free ride is over - at least for now. Yesterday's US release of Medal of Honor confirms that Sony has nullified the piracy-enabling PSJailbreak by locking the code to the new 3.42 firmware. While "backups" of the game are now circulating the internet, the game is completely unplayable with the hack as is.
Sony's response to the Jailbreak has been measured, but effective. Within a week of the open source PSGroove implementation arriving online, the platform holder released firmware 3.42, closing the USB exploit - effectively locking out hackers from running pirated games and unauthorised code from the PlayStation Network.