To state the obvious, worker and woker have 2 different meanings.

Is the director not a worker?

Universal profits from the movies and shows written by people.

Some of these actors and directors do eventually amass a lot of wealth, but there's a surprising number of even known actors/directors that are not that wealthy.

There are even more unknown actors in particular living in an apartment with 12 roommates in LA.

It's kinda how the system works. Have thousands of lower tier actors trying to make it big and uplift a few to show it's possible. Then they can cast "no-name" actors and extras for an unlivible wage because you have to do this type of work for the chance to make it