Technically the policies you speak of are not to prevent exploitation per se (although that may happen as a side effect), but to limit the competitiveness with

Technically the policies you speak of are not to prevent exploitation per se (although that may happen as a side effect), but to limit the competitiveness with other workers. Workers have shown that they can be quite nasty towards each other, even accepting exploitation if it means they can screw over the guy beside them, and that is what we seek to control. However, the topic of discussion is about blaming the exploiters. Laws to try and help prevent exploitation does not speak to that.