You can't expect to see them, any more than a major car manufacturer can decide to enforce ethics in "their" sales rooms and remain competitive in the market place. The market dynamics for recruitment are dominated by adverse selection. The best recruiters can pick the best employers to work with and have little incentive to work in lesser-known companies. The (considerably larger) remainder of the market is run by sleazebag recruiters; that's all most companies will ever get to work with (internally or outsourced).