LA. You want an editing bay? Its for rent by the hour. Photography studio? For rent by the hour. Recording studio? For rent by the hour. Stage? For rent by the hour. There are creatives in every field here, a critical mass level that allows for an entire service economy tailored towards them to not only exist but grow.
Not knowing much about the topic I feel like your comment is more profound than other answers. Access to collaborators, tools and technicians is a real bottleneck that LA seemingly solves. The city is certainly geared towards producing media, if not art.