Most home DMs don't have a crew worrying about lighting, sound, hair and make-up, painting miniatures, building sets, etc. They have definitely added all the entertainment industry infrastructure on that they can.
The most recent completed season of Dimension 20 talked about this stuff during their final episode, with the players marveling that a miniature of a summoned creature made up in play 24 hours earlier -- a topiary beast lion -- was available in the final battle, and Brennan and the players talked frankly about all of the crew that the audience doesn't see. And Brennan said explicitly that his home game uses beads and buttons instead of miniatures, because at home, he's just playing a game and not creating television.