Comment by wizardwes

I'd say that most of those things you list film directors needing to worry about are just as important to stage directors, but also, film directors have crew and other experts to fill a lot of those gaps. Directors aren't writing scripts, there are scriptwriter for that, just like playwrights, the director just gets some input, which happens in live theater right now. I know a director who is having to edit the script of Hamlet himself right now due to time constraints. A film director doesn't necessarily need to know everything they just need to be able to vocalize their wants and vision to other people who know more, and be able to receive feedback from that. Also, to my knowledge, directors aren't hiring everyone. They might pick a few key people, but that's why you have producers, and you let your key people pick their people under them.