Kesha is not a slave, period; she's not bound or forced to obey him. She would actually have a lot more freedom than you have. The only thing Luke can do atm is interfere with their music. Luke's rights to Kesha songs will be revoked soon enough, though.
Why aren't you quoting me? Usher's nose in the way?
Ke$ha always ends up getting dragged because her stans always try to inset themselves. It's usually KS_Dollar that kicks it off, so I don't know why THAT one always thinks he's the reason for something