A unionized work force might cost more and tip the balance the the other way, for better or for worse. But mostly the problem here is probably retaliation.
Either way, some work conditions are so bad that it is a risk work to taking over a status quo that harms workers in a way they can’t stay in the industry very long regardless. QA are certainly treated the worst in an industry that already has poor work conditions while representing more $$$ than the movie industry.
The reality is, if it was cheaper, it would have been done yesterday. You are not saying anything.