Unlicensed copyrighted music should not be playing in the background. Likewise, ixnay on logowear or logos in the background, no underage drinking or drugs, etc.
The cam studios should provide some training to their models/performers about rules such as this, and provide a written set of guidelines for their performers, along with scheduled periodic refresher training.
I'm assuming that they train their performers on how to maximize their performances so that they can maximize their profits, well, they need to also train them on how to avoid getting sued.
ADG