User blog comment:Omega natsu2/Episode 201: Delivery, Review./@comment-1839664-20140927040928/@comment-7418318-20140927103731

That's what I was getting at... though I did neglect to actually say it :o

I meant that there must be someone or something influencing them, since they wouldn't have any need to fight for their freedom or even demand it from Lucy and from all we know Yukino seems to be the same in this regard.