You can't pirate DRMed files easily, especially when you have a closed device playing them. Nintendo would probably encrypt these with device-specific keys meaning the file will run on your Rev and noone else's. Even if you changed your decryption key you still couldn't play any files at will, just those meant for the Rev whose key you got. N could blacklist any keys that appear on the web, i.e. once modded you can't download any new games (and probably not even connect to the web service). Sure, with the key you could decrypt the files and play them on a computer but honestly, there are warez sites out there offering the files unencrypted, which you probably know of since no legal site is going to offer a decrypter for Nintendo's DRM system (even if, that's what the DMCA is for). Since N would keep the matching encrypting key secret you can't alter the files to play on your Rev, you could only modchip your Rev to make i play unencrypted files as well. Or you could try breaking an AES encryption. Good luck with that.