There will always be new doors that can be opened. Just look at the PSP scene. If the twilight hack is blocked, a new exploit will be found. It really is a cat and mouse game between hackers and companies... But where as Sony is more like an aggressive tiger, Nintendo is more like a fat lazy house cat. Sure on occasion it'll make a half hearted attempt to catch the mouse... but it gets 3 square meals a day and will never have to worry about eating for the rest of it's life(the wii's life cycle) so it can afford to take it's time.