It's easy to laugh at Hollywood, especially lately. They have had a string of high profile flops and there has been a lot of conversation about the crumbling economics of the industry.
So it would appear that Hollywood has nothing to teach us about good marketing, but I disagree. One thing that blockbuster movie marketing teaches us is the concept of "windows".
Most marketing for a a movie happens in the window before opening weekend. Sometimes that window is 6 months before, sometimes it is 6 weeks before, but the bulk of the marketing spend happens before the show begins.
Because Hollywood understands something the arts should remember, once the show starts the impact of marketing diminishes.
Because marketing can't overcome the art. Before the work begins marketing can provide context and excitement around the art but once the curtain rises/doors open/orchestra begins the art either connects and spreads or it doesn't. The reviewers either love it or they don't.
You'll notice that in Hollywood once the movie opens all the remaining marketing is either parroting the good reviews and word of mouth or it disappears almost entirely.
They have learned, the hard way, that once the art lives it LIVES. It is really difficult and expensive to change the perception of a thing once it lives. That's why a key to my own marketing success is putting the time, energy and money into the art well before it starts.
Because once the art starts, the marketing (essentially) ends.