Because money is not what we need here.
We need a story, a narration, a vision written down in a way that others can see.
And that doesn’t cost very much.
Time, energy, emotional labor, perhaps some skill.
Good ideas don’t have to cost you an arm and a leg.
That is why no one will remember the 50th Marvel movie but everyone will remember what it is like to watch Hamilton for the first time.
It’s far cheaper to write a really good joke than it is to put in special effects.