At this point, it is the duty of the society in which the child lives to either force the child to submit to its rules of behavior, when the parents cannot.
The child may become so oppositionally defiant that he/she may escalate rebelliousness to the level of harming the parent(s) or other members of the society, and must be imprisoned or executed.
When the child reaches this stage of development at which he/she may be held accountable for his/her own behavior, he/she must suffer the consequences, not the parents.
On the other hand, when/if the parent(s) have the power and can be expected to govern the child and do not, we already have laws in force to charge the parent with negligence. All we have to do is enforce the laws already on the books.
We are going to just have to agree to disagree!
I appreciate your comments.