OK, I stand corrected - you're STUPID!!
Well "the mighty Gates team" would really love to BUT .... they can't put anything on your Box unless you are connected to their server and if they started making Xboxes with something "bad" on them you could just erase it and put the old drive stuff on it!
and don't forget that modchips are a lot harder for the machine to detect than you think. Once your Box loads the hacked bios the machine thinks that running Evox is what it was made to do instead of just MS stuff.