They dont know who Naruto is so they dont know that they cant turn him.

You cant harness kyubi without Naruto,Kybui and Naruto is merging .

Plus Naruto cant say leave me alone here is a litte kyubi chakra and they will leave him alone.

If they cant make him one them which they cant cause Narutos goal isnt to be bad guy,they will make a seal or something to turn him evil. If that happend its not the first time the hero becomes a bad guy for a while.

We will see,i hope Kishmoto have something good up his slevees about this.