Led Zepplin won't be joining up with Guitar Hero

so many acts are allowing there imagery and Music to be associated with Guitar hero including recently the Jimi Hendrix estate which granted permission with the music and his likeness,but One famous band Led Zepplin has said no thank you and doesn't want be turned into a game and also doesn't need the Money. with all things technilogy alot of acts are allowing themselves to adapt to the ever changing times of where technilogy is creating other outlets and this form of technilogy is also quite profitable to acts who might not have seen the added money coming from such a business, on the other hand Guitar Hero is a game and so many younger kids aren't playing on real instruments per se. a catch 22.but it is always interesting to see a veteren act say no to what is happening.of course I do wonder if in time will Led Zepplin change there minds? you know Money talks and the Stairway is Open eventually for a Profit.