This is just another version of Hollywood accounting. They pay actors with profit sharing incentives, but really they make the films super costly so they barely pay the actors more than they agreed. Where did all the costs come from to produce the film and make them 'unprofitable', from all the contractors, lighting, fx, etc. those are companies that the studios also own. Meaning the movie is unprofitable, but the profits appear in all the subsidiary's and mean they limit the amount given back to the creatives in bonuses.