That means nothing, they are cognisant humans, they cannot be owned unless they submit to coercive actions. Yes it is an extreme example but they cannot be property and told what to do without a very significant "or else" If someone walked up to you and told you they owned you and you must now do what they say would you simply just do as told? I highly doubt that, they would have to add a threat of force or just use force to convince you to comply and even then you have extreme options of refusal.