While OP was talking about salary setting as cartel behavior, what also comes to my mind is the video game industry. Devs/artists are so fucking exploited there.
There's a reason production crew on multi-million-dollar hit-driven products are usually unionized (see also: film).
Hardly. Apple and Microsoft are already on record as agreeing to fix wages, creating a cartel affecting a million tech workers.
https://pando.com/2014/03/22/revealed-apple-and-googles-wage...