@Hobbes Okay, here is the answer from my friend who is a film director. He directed the independent film X’s and O’s. You can contact him directly at xoxothemovie.com
I have no real quantifiable numbers regarding theater productions, companies, or troupes. But as for movies and TV, there are almost no acting opportunities outside of non-union (meaning non-paying) independent films. During x’s and o’s, SF Screen Actors Guild informed me that I was the only union production shooting in SF during the 3 weeks I shot. In LA, there are between 100–200 union projects of varying degrees (independent, studio, low, mid, and big budget) being shot on any given day. Big studio movies come to SF, but most roles outside of minor parts are cast out of LA. SF does have pull in commercials and industrials so there are more opportunities for paid work in that realm. LA actors have complained that there is no theater scene in LA. But SF is not anywhere close to NY or even Chicago when it comes to theatrical productions. SF is a place where actors wind up if they choose to not go to NY or LA. Not much business is done here but there is none of the fierce competition among actors associated with those other meccas. The quality of actors in the pool is also lacking in SF. I didn’t cast one part out of San Francisco for x’s and o’s. Not that I didn’t try. They just weren’t good enough to warrant the daily SAG rates. There really isn’t much choice. If one is serious about acting, he goes to LA or NY. If one wants to act as a side creative endeavor to his normal job, SF might provide a few fun chances to express his creativity. There are no legitimate private acting schools, reknowned theater programs, or recognizable agencies here.