I can kinda see a practical rationale to a no-cold-call policy: It's pretty well-known when a movie is in production, so one company could throw a monkey wrench

I can kinda see a practical rationale to a no-cold-call policy: It's pretty well-known when a movie is in production, so one company could throw a monkey wrench into a competitor's film by poaching a key person at a bad time just by throwing a bunch of money. I suppose that's mostly the case anywhere, but film releases are, I think, on somewhat tight schedules to hit release windows. Cause a three month delay in the release of a Pixar movie and you might remove a potentially huge summer competitor from the field. As long as unhappy employees are able to look elsewhere on their own initiative, it doesn't seem that bad.